Results 41 to 50 of about 4,384 (222)

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

Bryozoan‐Rich Carbonate Units of the Erfoud Area (SE Morocco) Record Latest Katian to Early Hirnantian Interglacial Intervals

Geological Journal, EarlyView.
In this study, we re‐examine the depositional architecture of the Erfoud limestone in Morocco. Introducing new biostratigraphic constraints from chitinozoan assemblages, we show that Katian to Hirnantian bryozoan‐pelmatozoan meadows reflect flooding events linked to a series of interglacial transgressions known to have occurred immediately prior to the
Philippe Razin, Jean‐François Ghienne, Amira Meddour, Lorena Tessitore, Thijs R. A. Vandenbroucke   +4 more
wiley   +1 more source

The Arctic Ocean Manganese Cycle, an Overlooked Mechanism in the Anomalous Palaeomagnetic Sedimentary Record

Frontiers in Earth Science, 2020
Palaeomagnetic records obtained from Arctic Ocean sediments are controversial because they include numerous and anomalous geomagnetic excursions. Age models that do not rely on palaeomagnetic interpretations reveal that the majority of the changes in ...
Steffen Wiers, Ian Snowball, Matt O’Regan, Christof Pearce, Bjarne Almqvist   +4 more
doaj   +1 more source

The Mesoproterozoic sub-Heddersvatnet unconformity, Telemark, South Norway [PDF]

Bulletin of the Geological Society of Finland, 2005
The 1.51 Ga Rjukan group,Telemark, S Norway, is divided into felsic volcanic rocks of the Tuddal formation and mafic rocks of the Vemork formation. It is overlain by the sedimentary rocks of the Vindeggen group (1.50-1.17 Ga), starting with the arkosic ...
K. Laajoki
doaj   +1 more source

(Table 3) Lithostratigraphy of sediment core Laguna Cascada

, 2010
(Table 3) Lithostratigraphy of sediment core Laguna ...
Karl Ljung (6960302), Fernandez, Marilen, Björck, Svante, Ljung, Karl, Marilen Fernandez (6960299), Svante Björck (6958901), Unkel, Ingmar, Wohlfarth, Barbara, Barbara Wohlfarth (6860108), Ingmar Unkel (6958898)   +9 more
core   +1 more source

Holocene vegetation change and fire–plant diversity shifts in Mediterranean France

Journal of Quaternary Science, EarlyView.
ABSTRACT Changes in fire activity are recognized as a major threat to biodiversity and vegetation communities across the Mediterranean Basin. However, long‐term fire–vegetation interactions remain poorly investigated. Here, we combine a high‐resolution charcoal record with pollen data from the “Étang des Aulnes” lake (southern France) to reconstruct ...
Cécile Latapy, Marion Lestienne, Andy Hennebelle, Johanne Burmeister, Aymeric LeGall, Gwendal Mouden, Damien Rius, Lisa Bajolle, Jacques‐Louis de Beaulieu, Walter Finsinger, Emmanuel Gandouin, François Demory, Cécile H. Albert, Bérangère Leys   +13 more
wiley   +1 more source

Stratigraphic Occurrences of Sub-Polar Planktic Foraminifera in Pleistocene Sediments on the Lomonosov Ridge, Arctic Ocean

Frontiers in Earth Science, 2019
Turborotalita quinqueloba is a species of planktic foraminifera commonly found in the sub-polar North Atlantic along the pathway of Atlantic waters in the Nordic seas and sometimes even in the Arctic Ocean, although its occurrence there remains poorly ...
Matt O’Regan, Matt O’Regan, Helen K. Coxall, Helen K. Coxall, Thomas M. Cronin, Richard Gyllencreutz, Richard Gyllencreutz, Martin Jakobsson, Martin Jakobsson, Stefanie Kaboth, Stefanie Kaboth, Ludvig Löwemark, Steffen Wiers, Gabriel West, Gabriel West   +14 more
doaj   +1 more source

Pre-late Weichselian podzol soil, permafrost features and lithostratigraphy at Penttilänkangas, western Finland [PDF]

Bulletin of the Geological Society of Finland, 2009
The ridge-shaped Penttilänkangas accumulation in western Finland is glaciofluvial in origin: probably an ice-marginal subaquatic fan, reworked and covered with younger deep water, littoral, eolian and glacial sediments.
R. Pitkäranta
doaj   +1 more source

The Hidden Harvest: Harnessing Colorado's Geodiversity and Environmental Heterogeneity for Sustainable Agritourism

Sustainable Development, EarlyView.
ABSTRACT Colorado's geologic, pedologic, topographic, hydrological, and climatic contrasts create strong but under‐synthesized opportunities for sustainable agritourism. This review investigates how geodiversity, and the broader environmental heterogeneity within which it operates, can be used to diversify farm income, strengthen place‐based visitor ...
Bonface O. Manono
wiley   +1 more source

Definition of new Pliocene, Pleistocene and Holocene lithostratigraphic units in the Croatian part of the Adriatic Sea (shallow offshore)

Geoadria, 2015
Exploration of Pliocene, Pleistocene and Holocene deposits in of the Croatian Northern Adriatic and Southern Dalmatia (coastline) offshore is presented in this paper.
Tomislav Malvić, Josipa Velić, Marko Cvetković, Marko Vekić, Marijan Šapina   +4 more
doaj