scholarly journals Subduction erosion: contributions of footwall and hanging wall to serpentinite mélange; field, geochemical and radiochronological evidence from the Eocene HP-LT belt of New Caledonia

2020 ◽  
pp. 1-21
Author(s):  
D. Cluzel
Keyword(s):  
New Caledonia ◽  
Hanging Wall ◽  
Subduction Erosion

scholarly journals Subduction and exhumation slip accommodation at depths of 10–80 km inferred from field geology of exhumed rocks: Evidence for temporal-spatial localization of slip

2021 ◽  
Author(s):  
John Wakabayashi
Keyword(s):  
Hanging Wall ◽  
Fault Zones ◽  
Plate Motion ◽  
Motion Data ◽  
Franciscan Complex ◽  
Subduction Erosion ◽  
Subsequent Deformation ◽  
Tectonic Mélange ◽  
Field Geology ◽  
Specific Unit

ABSTRACT Field relationships in the Franciscan Complex of California suggest localization of subduction slip in narrow zones (≤300 m thick) at the depths of ∼10–80 km. Accretionary and non-accretionary subduction slip over the ca. 150 Ma of Franciscan history was accommodated across the structural thickness of the complex (maximum of ∼30 km). During accretion of a specific unit (<5 Ma), subduction slip (accretionary subduction slip) deformed the full thickness of the accreting unit (≤5 km), primarily on discrete faults of <20 m in thickness, with the remainder accommodated by penetrative deformation. Some faults accommodating accretionary subduction slip formed anastomosing zones ≤200 m thick that resulted in block-in-matrix (tectonic mélange) relationships but did not emplace exotic blocks. Mélange horizons with exotic blocks range in thickness from 0.5 m to 1 km. These apparently formed by sedimentary processes as part of the trench fill prior to subsequent deformation during subduction-accretion. Accretionary subduction slip was localized within some of these mélanges in zones ≤300 m thick. Such deformation obscured primary sedimentary textures. Non-accretionary subduction faults separate units accreted at different times, but these <100-m-thick fault zones capture a small fraction of associated subduction slip because of footwall subduction and likely removal of hanging wall by subduction erosion. Most exhumation was accommodated by discrete faults ≤30 m thick. Structural, geochronologic, and plate motion data suggest that of the ∼13,000 km of subduction during the ca. 150 Ma assembly of the Franciscan Complex, ∼2000 km was associated with accretion.

Potential new sources of natural dyes from the traditional pharmacopoeia of New-Caledonia

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
M Toussirot ◽  
E Hnawia ◽  
D Cardon ◽  
W Nowik ◽  
A de la Sayette ◽  
...  
Keyword(s):  
New Caledonia ◽  
Natural Dyes ◽  
Traditional Pharmacopoeia

New Caledonia: Pacific Test Tube

1945 ◽  
Vol 14 (24) ◽  
pp. 355-357
Author(s):  
Lawrence Lader
Keyword(s):  
New Caledonia ◽  
Test Tube

End of Coolie Labor in New Caledonia

1946 ◽  
Vol 15 (17) ◽  
pp. 264-267
Author(s):  
Lewis S. Feuer
Keyword(s):  
New Caledonia

Leptochelia Vatulelensis (Crustacea: Tanaidacea), A New Species From Anchialine Caves of the South-Western Pacific

2011 ◽  
Vol 54 (2) ◽  
pp. 351-363
Author(s):  
Modest Guţu ◽  
Thomas Iliffe
Keyword(s):  
New Species ◽  
New Caledonia ◽  
Morphological Characteristics ◽  
Morphological Features ◽  
Western Pacific ◽  
Small Islands ◽  
The South ◽  
Anchialine Caves ◽  
A New Species

Leptochelia Vatulelensis(Crustacea: Tanaidacea), A New Species From Anchialine Caves of the South-Western PacificLeptochelia vatulelensisn. sp., discovered on the small islands of Vatulele (Fijian group) and Ouvéa (Loyalty Islands, New Caledonia), is described and illustrated. The new species is distinguished from the others of the"Leptochelia-dubiagroup" (to which it is generally similar) by the following combination of morphological characteristics: (1) the presence of three to four distal setae on the maxilliped basis; (2) merus of pereopods III and IV with only a distosternal seta; (3) endopod of the uropods formed of four (rarely three) articles; (4) males with two (sometimes three) relatively short aesthetascs on the first five articles of the antennular flagellum; (5) male cheliped with a diminished dimorphism; (6) males with a vertical comb-row of setae on the cheliped propodus. Although it inhabits inland, anchialine caves, the new species lacks morphological features that are characteristic of some cave species.

Zircon geochronology and paleomagnetism of an Archean harzburgite intrusion, eastern Bighorn Mountains, Wyoming

2020 ◽  
Vol 57 (1) ◽  
pp. 21-40
Author(s):  
Alexandra Wallenberg ◽  
Michelle Dafov ◽  
David Malone ◽  
John Craddock
Keyword(s):  
Hanging Wall ◽  
Vertical Axis ◽  
Shear Zones ◽  
Strike Slip ◽  
Zircon Geochronology ◽  
Weighted Mean ◽  
Mafic Complex ◽  
Laramide Orogeny ◽  
Axis Rotation ◽  
Bighorn Mountains

A harzburgite intrusion, which is part of the trailside mafic complex) intrudes ~2900-2950 Ma gneisses in the hanging wall of the Laramide Bighorn uplift west of Buffalo, Wyoming. The harzburgite is composed of pristine orthopyroxene (bronzite), clinopyroxene, serpentine after olivine and accessory magnetite-serpentinite seams, and strike-slip striated shear zones. The harzburgite is crosscut by a hydrothermally altered wehrlite dike (N20°E, 90°, 1 meter wide) with no zircons recovered. Zircons from the harzburgite reveal two ages: 1) a younger set that has a concordia upper intercept age of 2908±6 Ma and a weighted mean age of 2909.5±6.1 Ma; and 2) an older set that has a concordia upper intercept age of 2934.1±8.9 Ma and a weighted mean age 2940.5±5.8 Ma. Anisotropy of magnetic susceptibility (AMS) was used as a proxy for magmatic intrusion and the harzburgite preserves a sub-horizontal Kmax fabric (n=18) suggesting lateral intrusion. Alternating Field (AF) demagnetization for the harzburgite yielded a paleopole of 177.7 longitude, -14.4 latitude. The AF paleopole for the wehrlite dike has a vertical (90°) inclination suggesting intrusion at high latitude. The wehrlite dike preserves a Kmax fabric (n=19) that plots along the great circle of the dike and is difficult to interpret. The harzburgite has a two-component magnetization preserved that indicates a younger Cretaceous chemical overprint that may indicate a 90° clockwise vertical axis rotation of the Clear Creek thrust hanging wall, a range-bounding east-directed thrust fault that accommodated uplift of Bighorn Mountains during the Eocene Laramide Orogeny.

scholarly journals Introduction: Transdiasporic Rencontres in Việt Kiều Literature

2018 ◽  
Vol 15 (1-2) ◽  
pp. 1-5
Author(s):  
Alexandra Kurmann ◽  
Tess Do
Keyword(s):  
New Caledonia ◽  
Literary Texts ◽  
Special Issue ◽  
Contemporary Writing ◽  
The University ◽  
First Time ◽  
Vietnamese Diaspora

This special issue follows a conference entitled ‘Rencontres: A Gathering of Voices of the Vietnamese Diaspora’ that was held at the University of Melbourne, December 1-2 in 2016 and which sought to enable, for the first time, the titular transdiasporic rencontres or encounters between international authors of the Vietnamese diaspora. The present amalgam of previously unpublished texts written by celebrated Francophone and Anglophone authors of Vietnamese descent writing in France, New Caledonia and Australia today is the result of the intercultural exchanges that took place during that event. Literary texts by Linda Lê, Anna Moï and Thanh-Van Tran-Nhut are followed by writerly reflections on the theme of transdiasporic encounters from Hoai Huong Nguyen, Jean Vanmai and Hoa Pham. Framing and enriching these texts, scholarly contributions by established experts in the field consider the literary, cultural and linguistic transfers that characterize contemporary writing by authors of Vietnamese origin across the Francophone world. Ce volume spécial réunit les Actes du colloque ‘Rencontres : A Gathering of Voices of the Vietnamese Diaspora’ qui s’est tenue à l’Université de Melbourne les 1er et 2 décembre 2016 et qui visait à faciliter, pour la première fois, les rencontres entre les auteurs, chercheurs et universitaires internationaux de la diaspora vietnamienne. Les fruits de leurs échanges interculturels y sont réunis dans ce présent recueil sous deux formes complémentaires : d’un côté, les articles d’experts en littérature francophone comparée ; de l’autre, les contributions créatives de célèbres auteurs francophones et anglophones d’origine vietnamienne basés aujourd’hui en France, en Nouvelle Calédonie et en Australie. Les textes littéraires de Linda Lê, Anna Moï et Thanh-Van Tran-Nhut, suivis de réflexions d’auteurs par Hoai Huong Nguyen, Hoa Pham et Jean Vanmai sur le thème des rencontres transdiasporiques, se retrouvent enrichis par les études savantes menées sur les transferts littéraires, culturelles et linguistiques qui caractérisent l’écriture contemporaine des écrivains d’origine vietnamienne dans le monde francophone.

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