Éditeur(s) : Sergio Gonzalez, Jr. Sergio Gonzalez, Jr. ( Gainesville, Fla. )
Florida
Caribbean Area
Puerto Rico

Éditeur(s) : Cassell, Petter and Galpin Cassell, Petter and Galpin ( London ;, New York )
Résumé : (Statement of Responsibility) by Mary Godolphin.
Publisher's catalogue follows text.
(Funding) Preservation and Access for American and British Children's Literature, 1870-1889 (NEH PA-50860-00).
England -- London
United States -- New York -- New York

Droits : This item is presumed to be in the public domain. The University of Florida George A. Smathers Libraries respect the intellectual property rights of others and do not claim any copyright interest in this item. Users of this work have responsibility for determining copyright status prior to reusing, publishing or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions may require permission of the copyright holder. The Smathers Libraries would like to learn more about this item and invite individuals or organizations to contact The Department of Special and Area Studies Collections (special@uflib.ufl.edu) with any additional information they can provide.
002248806
ALK0531
14341859

Éditeur(s) : McLoughlin Brother's, Publishers McLoughlin Brother's, Publishers ( New York )
Résumé : (Statement of Responsibility) by Mary Godolphin ; with colored illustrations.
An adaptation of Thomas Day's History of Sandford and Merton.
Date of publication from inscription.
Cover title: Sanford [sic] and Merton.
Text in double columns.
(Funding) Preservation and Access for American and British Children's Literature, 1870-1889 (NEH PA-50860-00).
United States -- New York -- New York

Droits : This item is presumed to be in the public domain. The University of Florida George A. Smathers Libraries respect the intellectual property rights of others and do not claim any copyright interest in this item. Users of this work have responsibility for determining copyright status prior to reusing, publishing or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions may require permission of the copyright holder. The Smathers Libraries would like to learn more about this item and invite individuals or organizations to contact The Department of Special and Area Studies Collections (special@uflib.ufl.edu) with any additional information they can provide.
002248820
ALK0545
174964989

Résumé : The slides were taken on collecting trips sponsored by the William L. Bryant Foundation, where books, music and art indigenous to the regions were gathered. The are organized by geographical location.
Devon House was built in 1881 by Jamaica’s first black millionaire George Stiebel. The land was first assigned to Reverend John Zellers by King George II in May 1667 to aid in the Anglican Church’s efforts to spread Christianity on the island. The house’s architectural style is a mix of Jamaican and English Georgian style architecture and is located at the corner of Trafalgar Road and Hope Road, in what later became known as Millionaire’s corner. In 1967, the house was purchased by the Jamaica National Heritage Trust and was later declared a national monument in 1990 after winning the American Express Historic Preservation Award. Devon House is a Jamaica Heritage Site owned by the Jamaican government. Slide labeled Jam. in Kingston Devon House.
Jamaica -- Caribbean region -- Saint Andrew

Droits : All rights to images are held by the respective holding institution. This image is posted publicly for non-profit educational uses, excluding printed publication. For permission to reproduce images and/or for copyright information contact Special Collections & University Archives, University of Central Florida Libraries, Orlando, FL 32816 phone (407) 823-2576, email: speccoll@mail.ucf.edu
CFM1972_01a
Sheet 58:15
http://ufdc.ufl.edu/AA00030138/00001

Résumé : (Funding) This collection includes items related to Florida’s environments, ecosystems, and species. It includes the subcollections of Florida Cooperative Fish and Wildlife Research Unit project documents, the Sea Grant technical series, the Florida Geological Survey series, the Coastal Engineering Department series, the Howard T. Odum Center for Wetland technical reports, and other entities devoted to the study and preservation of Florida's natural resources.
North America -- United States of America -- Florida
Florida
Florida

Droits : Copyright Walter S. Judd. Permission granted to University of Florida to digitize and display this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
http://ufdc.ufl.edu/UF00073894/00001

Éditeur(s) : J. Thomson [etc., etc.] J. Thomson [etc., etc.] ( Demerara )
Résumé : (Numbering Peculiarities) The volumes are grouped in series as follows: v. 1-5, 1882-86; new ser. v. 1-12, 1887-1898/99; 1900-02 (unnumbered); 3d ser. v. 1- 1911-
(Numbering Peculiarities) Volume for 1912 is lettered on cover "The colony volume"; 1917, War volume"; 1918, "Historical illustrated volume"; 1919, "Colonisation volume"; 1921, "Progressive volume".
Semiannual (June, Dec.) 1882-97; new ser. v.12 in 2 parts covering the years 1898-99; annual, 1900-02; irregular, 1911-
1900-02 have title: Journal of the Royal agricultural and commercial society of British Guiana.
The publication was suspended after 1902, but was revived Jan. 1911 under the original title.
Reports and proceedings of the society are included in each volume.
"Agricultural societies in British Guiana. An historical sketch, by Thomas Watt": v. 5, 1886, p. [255]-273.
"Clubs and societies in British Guiana to 1844. By James Rodway": new ser. v. 6, 1892, p. [69]-90.
Title was chosen for the New York and Northeast agriculture and natural history preservation project, 1998-2001. The project was carried out by the Cornell University, A.R. Mann Library, New York State Library, and New York Public Library and funded in part by the New York State Dept. of Education.
Editors: 1882-86, E. F. im Thurn.--1887-92, 1898-99, J.J. Quelch.--1893-97, James Rodway.--1911- J.J. Nunan (1911, 1917-19, with J. Rodway; 1912- with J. Aiken and G. Franks).--1921- J. Rodway.
Digitized volumes available from Internet Archive. Digitized volumes include Pearson, J.G. “The Life History of an East Indian in British Guiana.” Timehri: the journal of the Royal agricultural and commercial society of British Guiana (1882), http://archive.org/stream/timehrijournalr06guiagoog#page/n145/mode/2up/search/%22Life+History+%22
Record-only item with link to the full digital resource added to support use of this text in the Panama Silver and Asian Gold course to be taught at three institutions starting in Fall 2013.

320094747
ocn320094747
http://ufdc.ufl.edu/AA00015950/00001

Éditeur(s) : Chez l'auteur Chez l'auteur ( Paris )
Résumé : (Statement of Responsibility) par M. Moreau de Saint-Méry.
Title from PDF t. 1, t.p. (LLMC Digital, viewed on June 30, 2010).
Contains "Lois et constitutions" only; the Description was separately published (Description ... de la partie franc̜aise, 1797-98, 2 v., 2e. éd., 1875-76, 3 v.); material for the History and other inedited papers are preserved in the Archives du ministère des colonies.-cf. J. de Dampierre, Essai, 1904, p. 191-196, 220-221.
Includes indexes.
West Indies, French
Petites Antilles
West Indies, French
Haiti
France
Petites Antilles
Haïti
France

645658380

Résumé : The slides were taken on collecting trips sponsored by the William L. Bryant Foundation, where books, music and art indigenous to the regions were gathered. The are organized by geographical location.
Maima-Seville Heritage Park, owned and operated by the Jamaica National Heritage Trust, is made up of three distinct areas: the original Spanish settlement - Sevilla La Nueva, a British sugar plantation, and forested regions. The following preserved structures can be found at the site: the Governor’s castle, a Spanish sugar mill, an artisan workshop, and the remains of a Spanish settlement, a Spanish church, and a British great house. Christopher Columbus spent over a year marooned here after his fourth voyage to the New World in 1503. Slide labeled Jam. where Col. landed - Seville.
Jamaica -- Caribbean region -- Seville, Saint Ann

Droits : All rights to images are held by the respective holding institution. This image is posted publicly for non-profit educational uses, excluding printed publication. For permission to reproduce images and/or for copyright information contact Special Collections & University Archives, University of Central Florida Libraries, Orlando, FL 32816 phone (407) 823-2576, email: speccoll@mail.ucf.edu
CFM1972_01a
http://ufdc.ufl.edu/AA00031000/00001

Éditeur(s) : William Blackwood and Sons William Blackwood and Sons ( London, Edinburgh )
Résumé : (Statement of Responsibility) by Mary Pamela Milne-Home ; with six full-page illustrations.
Some stories reprinted from G.W. Dasent's Popular tales from the Norse.
Frontispiece printed in sepia.
(Funding) Preservation and Access for American and British Children's Literature, 1870-1889 (NEH PA-50860-00).
Scotland -- Edinburgh
England -- London
West Indies

Droits : This item is presumed to be in the public domain. The University of Florida George A. Smathers Libraries respect the intellectual property rights of others and do not claim any copyright interest in this item. Users of this work have responsibility for determining copyright status prior to reusing, publishing or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions may require permission of the copyright holder. The Smathers Libraries would like to learn more about this item and invite individuals or organizations to contact The Department of Special and Area Studies Collections (special@uflib.ufl.edu) with any additional information they can provide.
002234380
ALH4799
03106930

Éditeur(s) : George A. Smathers Libraries, University of Florida University of the Virgin Islands George A. Smathers Libraries, University of Florida ( Gainesville, FL ) University of the Virgin Islands ( St. Thomas, US Virgin Islands )
Résumé : Grant proposal for Project Ceres Proposal, USAIN Digital Libraries & Preservation Committee (2014).

Droits : Applicable rights reserved.
http://ufdc.ufl.edu/AA00020002/00001

Éditeur(s) : HAL CCSD Elsevier
Résumé : Une approche par datations multiples a été menée sur les dépôts de sédiments de crue retrouvés dans les gorges du Gardon (Languedoc). Le plomb-210, le césium-137 et l’analyse géochimique des sédiments contaminés par les mines ont été utilisés pour reconstruire l’histoire des dépôts de crue. Cette approche a été combinée avec l’historique des crues du Gardon depuis 1890 pour affiner l’approche géochronologique. Au niveau de la cavité GG et de la terrasse GE les analyses ont permis d’illustrer les mécanismes d’érosion-redéposition pouvant perturber les séquences de sédiments. Les enregistrements des dépôts de sédiments de crue sont complets sur la terrasse GE située à 10 m au-dessus du lit mineur à partir de 1958, et incomplets auparavant. Sur la période 1880-1958, 25 crues ont eu un débit suffisant (>1450 m3/s) pour recouvrir la terrasse, alors que l’on recense seulement 5 à 6 crues depuis 1958 (pour un débit de submersion supérieur à 1700 m3/s). L’augmentation progressive du débit de submersion et la fréquence moindre d’inondation de la terrasse ont pu permettre sur la période récente la stabilisation de la couche de surface par la végétation et limiter l’érosion lors de crues importantes. Les enregistrements semblent complets dans la cavité GG située à 15 m au-dessus du lit mineur. La fréquence moindre de submersion à ce niveau plus élevé peut expliquer une meilleure stabilisation des dépôts de crue, rendus moins vulnérables à l’érosion. La datation au radiocarbone a été testée même si elle ne permet pas de dater avec précision les dépôts de crue des derniers siècles. Sur la terrasse GE, 80% des dates au carbone 14 sur charbon de bois sont beaucoup trop vieilles par rapport aux autres techniques de datation, ce qui peut s’expliquer par une remobilisation/déstockage de charbons de bois anciens. Les datations radiocarbone sur graines donnent de meilleurs résultats, car issues d’une production annuelle, plus facilement décomposable et moins sujette à des dépôts intermédiaires. Au final, il apparaît que la technique de datation par radiocarbone sur des charbons de bois retrouvés dans les séquences sédimentaires n’est pas fiable, alors qu’elle est la plus pratiquée en paléo-hydrologie. L’utilisation combinée du plomb-210, du césium-137, de l’analyse géochimique des sédiments et des informations sur les crues historiques a permis de discriminer et de dater les différents dépôts de crue de ce dernier siècle dans la cavité GG et la terrasse GE. / A multidating approach was carried out on slackwater flood deposits, preserved in valley side rock cave and terrace, of the Gardon River in Languedoc, southeast France. Lead-210, caesium-137, and geochemical analysis of mining-contaminated slackwater flood sediments have been used to reconstruct the history of these flood deposits. These age controls were combined with the continuous record of Gardon flow since 1890, and the combined records were then used to assign ages to slackwater deposits. The stratigraphic records of terrace GE and cave GG were excellent examples to illustrate the effects of erosion/preservation in a context of a progressively self-censoring, vertically accreting sequence. The sedimentary flood record of the terrace GE located at 10 m above the channel bed is complete for years post-1958 but incomplete before. During the 78-year period 1880-1958, 25 floods of a sufficient magnitude (> 1450 m3/s) have covered the terrace. Since 1958, however, the frequency of inundation of the deposits has been lower:only 5 or 6 floods in 52 years have been large enough to exceed the necessary threshold discharge (> 1700 m3/s). The progressive increase of threshold discharge and the reduced frequency of inundation at the terrace could allow stabilisation of the vegetation cover and improved protection against erosion from subsequent large magnitude flood events. The sedimentary flood record seems complete for cave GG located at 15 m above the channel bed. Here, the low frequency of events would have enabled a high degree of stabilisation of the sedimentary flood record, rendering the deposits less susceptible to erosion. Radiocarbon dating are used in this study and compared to the other dating techniques.Eighty percent of radiocarbon dates on charcoals were considerably older than those obtained by the other techniques in the terrace. On the other hand, radiocarbon dating on seeds provided better results. This discrepancy between radiocarbon dates on charcoal and seeds is explained by the nature of the dated material (permanent wood vs. annual production and resistance to degradation process). Finally, we showed in this study that although the most common dating technique used in paleoflood hydrology is radiocarbon dating, usually on charcoal preserved within slackwater flood sediments, this method did not permitus to define a coherent age model. Only the combined use of lead-210, caesium-137, and geochemical analysis of mining-contaminated sediments with the instrumental flood record can be applied to discriminate and date the recent slackwater deposits of the terrace GE and cave GG.
ISSN: 0169-555X

hal-01059669
https://hal.archives-ouvertes.fr/hal-01059669
https://hal.archives-ouvertes.fr/hal-01059669/document
https://hal.archives-ouvertes.fr/hal-01059669/file/ly2014-pub00040953.pdf
IRSTEA : PUB00040953

Éditeur(s) : HAL CCSD Wiley-Blackwell
Résumé : International audience
The Lanzo peridotite massif is a fragment of oceanic lithosphere generated in an ocean-continent transition context and eclogitized during alpine collision. Despite the subduction history, the massif has preserved its sedimentary oceanic cover, suggesting that it may have preserved its oceanic structure. It is an exceptional case for studying the evolution of a fragment of the lithosphere from its oceanization to its subduction and then exhumation. We present a field and petrological study retracing the different serpentinization episodes and their impact on the massif structure. The Lanzo massif is composed of slightly serpentinized peridotites (<20% serpentinization) surrounded by an envelope of foliated serpentinites (100% serpentinization) bordered by oceanic metabasalts and metasedimentary rocks. The limit between peridotites and serpentinites defines the front of serpentinization. This limit is sharp: it is marked by the presence of massive serpentinites (80% serpentinization) and, locally, by dykes of metagabbros and mylonitic gabbros. The deformation of these gabbros is contemporaneous with the emplacement of the magma. The presence of early lizardite in the peridotites testifies that serpentinization began during the oceanization, which is confirmed by the presence of meta-ophicarbonates bordering the foliated serpentinite envelope. Two additional generations of serpentine occur in the ultramafic rocks. The first is a prograde antigorite that partially replaced the lizardite and the relict primary minerals of the peridotite during subduction, indicating that serpentinization is an active process at the ridge and in the subduction zone. Locally, this episode is followed by the deserpentinization of antigorite at peak P-T (estimated in eclogitized metagabbros at 2-2.5 GPa and 550-620 °C): it is marked by the crystallization of secondary olivine associated with chlorite and/or antigorite and of clinopyroxene, amphibole and chlorite assemblages. A second antigorite formed during exhumation partially to completely obliterating previous textures in the massive and foliated serpentinites. Serpentinites are an important component of the oceanic lithosphere generated in slow to ultraslow spreading settings, and in these settings, there is a serpentinization gradient with depth in the upper mantle. The seismic Moho limit could correspond to a serpentinization front affecting the mantle. This partially serpentinized zone constitutes a less competent level where, during subduction and exhumation, deformation and fluid circulation are localized. In this zone, the reaction kinetics are increased and the later steps of serpentinization obliterate the evidence of this progressive zone of serpentinization. In the Lanzo massif, this zone fully recrystallized into serpentinite during alpine subduction and collision. Thus, the serpentinite envelope represents the oceanic crust as defined by geophysicists, and the sharp front of serpentinization corresponds to an eclogitized seismic palaeo-Moho.
ISSN: 0263-4929

hal-00823051
https://hal.archives-ouvertes.fr/hal-00823051
DOI : 10.1111/jmg.12008

Éditeur(s) : Bradbury, Agnew, and Co. Bradbury, Agnew, and Co. ( London )
Résumé : (Statement of Responsibility) by F.C. Burnand ; with seventy-six illustrations by Linley Sambourne.
A parody of Thomas Day's The history of Sandford and Merton.
Publisher's advertisements follow text.
(Funding) Preservation and Access for American and British Children's Literature, 1870-1889 (NEH PA-50860-00).
England -- London
Jamaica

Droits : This item is presumed to be in the public domain. The University of Florida George A. Smathers Libraries respect the intellectual property rights of others and do not claim any copyright interest in this item. Users of this work have responsibility for determining copyright status prior to reusing, publishing or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions may require permission of the copyright holder. The Smathers Libraries would like to learn more about this item and invite individuals or organizations to contact The Department of Special and Area Studies Collections (special@uflib.ufl.edu) with any additional information they can provide.
002223016
ALG3264
02703594

Éditeur(s) : HAL CCSD European Geosciences Union (EGU) European Geosciences Union
Résumé : The Moroccan Mediterranean coast is located in one of the area's most vulnerable to extreme weather events or tsunami hazards. The objective of this research is to reconstruct the historical extreme submersion-event record using sea-induced deposits preserved in coastal lagoon. The Nador lagoon is the largest Moroccan lagoon (115 km2). It is located along the western Mediterranean, which has a high cyclogenetic character and is exposed to tsunamis from the Alboran Sea. The sandy barrier which separates the lagoon from the Mediterranean Sea is marked by much overwash, which indicate how intensely it has been exposed to the adverse sea events through history. Using the UWITEC© gravity coring platform, an undisturbed MC4.5 core (1.15 m long) was successfully sampled in the studied lagoon. To identify extreme sea events, a multi-proxy approach was applied combining sedimentological and geochemical data. Three paleoevents were identified; all of them are concentrated over the last 500 years, and the most recent event corresponds to the 1889 storm. For the others deposits, it is difficult to determine exactly their origin; however, the high frequency of storm events over the relevant period and the absence of historical tsunamis evidence is more in favor of the meteorological origin.
ISSN: 1561-8633

hal-01146451
https://hal.archives-ouvertes.fr/hal-01146451
DOI : 10.5194/nhess-15-203-2015

Éditeur(s) : HAL CCSD American Geophysical Union
Résumé : International audience
We recover the Holocene earthquake history of seven seismogenic normal faults in the Fucino system, central Italy. We collected 800 samples from the well-preserved limestone scarps of the faults and modeled their 36Cl concentrations to derive their seismic exhumation history. We found that > 30 large earthquakes broke the faults in synchrony over the last 12 ka. The seven faults released strain at the same periods of time, 12-9 ka, 5-3 ka, and 1.5-1 ka. On all faults, the strain accumulation and release occurred in 3-6 ka supercycles, each included a 3-5 ka phase of slow (≤ 0.5-2 mm/yr) strain accumulation in relative quiescence, followed by a cluster of three to four large earthquakes or earthquake sequences that released most of the strain in < 1-2 ka. The large earthquakes repeated every 0.5 ± 0.3 ka during the paroxysmal phases and every 4.3 ± 0.9 ka between those phases. Earthquakes on the northern faults produced twice larger surface slips (~ 2 m) and had larger magnitudes (Mw 6.2-6.7) than those on the southern faults. On most faults, the relative strain level was found to control the amount of slip and the time of occurrence of the next large earthquake. Faults entered a phase of clustered activity once they had reached a specific relative strain threshold. The Tre Monti fault is identified as the most prone to break over the next century. Our data document earthquake synchrony and clustering at a broader space and time scale than has been reported to date.
ISSN: 0148-0227

hal-00903460
https://hal.archives-ouvertes.fr/hal-00903460
DOI : 10.1002/jgrb.50299

Éditeur(s) : HAL CCSD Elsevier
Résumé : International audience
Seismic tomography and high surface heat flow models indicate an anomalously thin and hot lithospheric mantle beneath the Canadian Cordillera. To understand the thermal and deformational history of the lithospheric mantle under these conditions, we performed a study of the microstructures, crystal preferred orientations (CPO), and seismic anisotropy of mantle xenoliths collected in the Summit Lake volcano in the southern Canadian Cordillera. The xenoliths vary in composition between spinel lherzolites, cpx-rich lherzolites, and wehrlites. All samples are coarse-grained and show clear evidence for annealing, but deformation microstructures are well-preserved in the spinel lherzolites. Olivine CPO is characterized by a strong point-maximum of [100] and by a girdle distribution of [010[ and [001] axes normal to it; CPO strength is variable, spinel-lherzolites have the strongest CPO. Some samples show a weak orthopyroxene CPO consistent with the olivine one. However most pyroxenes have random CPO, interstitial shapes and undeformed appearance, which suggest a secondary origin by reactive melt percolation under static conditions, leading to crystallization of cpx + sp +/- opx at the expenses of olivine, followed by crystallization of cpx + sp +/- ol at the expenses of opx to produce the wehrlites. The studied xenoliths have typical upper mantle seismic properties patterns with fastest propagation of P-waves and polarization of S-waves parallel to the olivine [100] maxima. Maximum P- and S-waves anisotropy for lherzolites are 8 and 5% respectively. Dispersion of the olivine CPO due to neocrystallization of olivine results in weaker anisotropies (6.5 and 3.5%) in wehrlites. Seismic velocities calculated using a geotherm consistent with the equilibrium temperatures of the Summit Lake xenoliths are 3-4% lower than those expected in a normal, 100 km-thick lithosphere, consistent with seismic tomography models for the region. This high geothermal gradient may be partially explained by considering the anisotropy of thermal conductivity of olivine and subhorizontal foliations in the lithospheric mantle, which result in a decrease by up to 15% of the thermal conductivity in the vertical direction.
ISSN: 0040-1951

hal-00618332
https://hal.archives-ouvertes.fr/hal-00618332
DOI : 10.1016/j.tecto.2011.04.014

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : New structural data and P-T estimates of syn-deformational assemblages within the Beni Bousera peridotites and their crustal envelope are used to explain their Alpine exhumation. The Beni Bousera peridotites occur as thin sheets within high grade crustal units of the lower Sebtides (inner Rif, Morocco) and are composed of weakly deformed spinel lherzolite in the core of the massif and garnet-spinel mylonite at the rim. The main foliation trajectories in both the peridotites and overlying crustal units show systematic rotation towards their mutual contact, indicating a kilometer-scale top to the NW shearing with a dextral component along this crust/mantle contact. Widespread top to the NW shear criteria within the crustal units overlying the peridotite support this feature. Available ages constrain the development of the main foliation in both the peridotites and crustal rocks between 25 and 20 Ma. New P-T data from the peridotites show that deformation occurs during decompression from approximate to 22 kbar, 1050 degrees C to approximate to 9-15 kbar, 800 degrees C. As a consequence, exhumation of the Beni Bousera peridotites takes place during the Oligo-Miocene lithosphere thinning in the footwall of a lithospheric extensional shear zone. The exceptional preservation of garnet within the mylonitic peridotites results from rapid cooling of the border of the massif due to the juxtaposition with colder crustal rocks along this shear zone. Uplifting of the hot mantle rocks simultaneously induces high temperature metamorphism in the overlying crustal units. These new findings allow us to reconstruct the deformation history of the Beni Bousera region and the Alboran domain in the framework of the western Mediterranean geodynamics during the last 40 Myrs.. (C) 2011 Lavoisier SAS. All rights reserved
ISSN: 0985-3111

hal-00767654
https://hal.archives-ouvertes.fr/hal-00767654
DOI : 10.3166/ga.24.49-60

Éditeur(s) : HAL CCSD Elsevier
Résumé : The Erro-Tobbio peridotites (Voltri Massif, Ligurian Alps) represent subcontinental lithospheric mantle tectonically exhumed during Permo-Mesozoic extension of the Europe-Adria lithosphere. Previous studies have shown that exhumation started during Permian times, and occurred along kilometer-scale lithospheric shear zones which enhanced progressive deformation and recrystallization from spinel- to plagioclase-facies conditions. Ongoing field and petrologic investigations have revealed that the peridotites experienced, during uplift, a composite history of diffuse melt migration and multiple episodes of ultramafic-mafic intrusions. In this paper we present the results of field, structural and petrologic-geochemical investigations into a sector of the Erro-Tobbio peridotite unit that preserves well this multiple intrusion history. Melt impregnation in the peridotites is evidenced by significant plagioclase enrichment and crystallization of unstrained orthopyroxene replacing kinked mantle olivine and clinopyroxene; impregnating melts were thus opx-saturated. Melt-rock interaction caused chemical changes in mantle minerals (e.g. Al decrease and REE increase in cpx; Ti and Cr# enrichment in spinel). Nevertheless, clinopyroxenes still exhibit LREE depletion (Ce;N;/Sm;N; = 0.006-0.011), indicating a depleted signature for the percolating melts. Melt impregnation was thus related to diffuse porous flow migration of depleted MORB-type melt fractions that modified their compositions towards opx saturation by mantle-melt interaction during ascent. The impregnated peridotites are intruded by a hectometer-scale stratified cumulate body, mostly consisting of troctolites and plagioclase wehrlites, showing gradational, interfingered contacts with the host mantle rocks. Subsequent intrusion events are revealed by the occurrence of olivine gabbros as decameter-wide lenses, variably thick (centimeter- to meter-scale) dykes and thin dykelets, which crosscut both the peridotite foliation and the magmatic layering in the cumulates. Overall, major and trace element compositions of minerals in the intrusives indicate that they represent variably differentiated cumulus products crystallized from rather primitive N-MORB-type aggregated melts. Slightly more evolved compositions are shown by olivine gabbros, relative to the troctolites and plagioclase wehrlites of the cumulate body. Mineral chemistry features (e.g. the Fo-An correlation and high Na, Ti, Mg# in cpx) indicate that the studied intrusive rocks crystallized at moderate pressure conditions (3-5 kbar, i.e. 9-15 km depth). Our study thus points to a progressive transition from porous flow melt migration to emplacement of magmas in fractures, presumably related to progressive change of lithospheric mantle rheology during extension-related uplift and cooling.
ISSN: 0024-4937

hal-00407669
https://hal.archives-ouvertes.fr/hal-00407669
DOI : 10.1016/j.lithos.2006.06.014

Éditeur(s) : Université des Antilles Études caribéennes
Résumé : La préservation et l’exploitation durable du patrimoine culturel, en particulier du patrimoine historique (et, accessoirement, scientifique), et sa mise en tourisme au service d’activités de loisirs et de découverte, suscitent de nouvelles formes et alimentent de nouvelles offres de tourismes, dites « alternatives », sur lesquelles elle s’appuie en retour.Le patrimoine historique de la Guadeloupe, tant agricole qu’industriel, longtemps délaissé et aujourd’hui redécouvert et remis en valeur, en constitue un exemple significatif, comme il en va dans d’autres territoires et pays de la Caraïbe. Il en illustre les potentialités tout en justifiant les attentes qui s’y attachent en matière de développement local tant touristique que plus général.La reconnaissance de la valeur patrimoniale et de l’intérêt culturel des sites concernés constitue toutefois un phénomène relativement récent, à travers leur sauvegarde et leur réhabilitation. Leur valorisation et leur ouverture au public vont de pair avec leur exploitation au profit d’un tourisme de mémoire marqué par une forte connotation pédagogique.
The preservation and sustainable use of cultural heritage, especially historical (and, incidentally, scientific) heritage, and its introduction into tourism for the benefit of leisure and discovery activities, give rise to new forms and fuel new offers of tourism, called “alternatives”, on which they rely in return.The historical heritage of Guadeloupe, both agricultural and industrial, which has long been untouched and now being rediscovered and restored, is a significant example of this, as it is in other Caribbean territories and countries. It illustrates their potentialities while justifying the expectations that are attached to them in terms of local development both tourism and more general.Recognition of the heritage value and cultural interest of the sites concerned, however, is a relatively recent phenomenon, through their safeguarding and rehabilitation. Their valorisation and their opening to the public go hand in hand with their exploitation in favor of a tourism of memory marked by a strong pedagogical connotation.
La conservación y el uso sostenible del patrimonio cultural, especialmente del patrimonio histórico (y, de paso, científico), y su asignacion al turismo en el servicio de la recreación y del descubrimiento, dan lugar a nuevas formas y nuevos acuerdos de suministro turismo "alternativo", en los que se basa en el rendimiento.El patrimonio histórico de Guadalupe, tanto agrícolas como industriales, y hoy a largo redescuidado y redescubierto, constituye un ejemplo significativo, como es el caso en otros territorios y países del Caribe. Esto ilustra sus potencialidades y justifica las expectativas para uno desarrollo local turistico como mas general.El reconocimiento de la valor patrimonial y de la importancia cultural de los sitios considerados, sin embargo, es un fenómeno relativamente reciente, a través de su protección y rehabilitación. Su desarrollo y su apertura al público van mano a mano con su explotación en beneficio de un turismo de memoria marcada por una fuerte connotación educativa.
Guadeloupe

Droits : info:eu-repo/semantics/openAccess
urn:doi:10.4000/etudescaribeennes.11137
http://journals.openedition.org/etudescaribeennes/11137

Éditeur(s) : HAL CCSD
Résumé : International audience
Abstract A careful re-examination of the well-known written documents pertaining to the 2,750-year-long historical period of Mount Etna was carried out and their interpretation checked through the high-accuracy archeomagnetic method (>1,200 large samples), combined with the 226Ra-230Th radiochronology. The magnetic dating is based upon secular variation of the direction of the geomagnetic field (DGF) and estimated to reach a precision of  ±40 years for the last 1,200 years, and ±100 to 200 years up to circa 150 B.C. Although less precise, the 226Ra-230Th method provides a unique tool for distinguishing between historic and prehistoric lavas, which in some cases might have similar DGFs. We show that despite the abundance of details on ancient historical eruptions, the primary sources of information are often too imprecise to identify their lava flows and eruptive systems. Most of the ages of these lavas, which are today accepted on the geological maps and catalogues, were attributed in the 1800s on the basis of their morphology and without any stratigraphical control. In fact, we found that 80% of the “historically dated” flows and cones prior to the 1700s are usually several hundreds of years older than recorded, the discrepancies sometimes exceeding a millennium. This is proper the case for volcanics presumed of the “1651 east” (actually ∼1020), “1595” (actually two distinct flows, respectively, ∼1200 and ∼1060), “1566” (∼1180), “1536” (two branches dated ∼1250 and ∼950), “1444” (a branch dated ∼1270), “1408” (lower branches dated ∼450 and ∼350), “1381” (∼1160), “1329” (∼1030), “1284” (∼1450 and ∼700), “1169 or 812” (∼1000) eruptions. Conversely, well-preserved cones and flows that are undated on the maps were produced by recent eruptions that went unnoticed in historical accounts, especially during the Middle Ages. For the few eruptions that are recorded between A.D. 252 and 750 B.C., none of their presumed lava flows shows a DGF in agreement with that existing at their respective dates of occurrence, most of these flows being in fact prehistoric. The cinder cones of Monpeloso (presumed “A.D. 252”) and Mt. Gorna (“394 B.C.”), although roughly consistent magnetically and radiochronologically with their respective epochs, remain of unspecified age because of a lack of precision of the DGF reference curve at the time. It is concluded that at the time scale of the last millennia, Mount Etna does not provide evidence of a steady-state behavior. Periods of voluminous eruptions lasting 50 to 150 years (e.g., A.D. 300–450, 950–1060, 1607–1669) are followed by centuries of less productive activity, although at any time a violent outburst may occur. Such a revised history should be taken into account for eruptive models, magma output, internal plumbing of the volcano, petrological evolution, volcano mapping and civil protection.
Bulletin of Volcanology / Bull Volcanic Eruptions

hal-00315967
https://hal.archives-ouvertes.fr/hal-00315967
DOI : 10.1007/s00445-007-0121-x