Results 91 to 100 of about 4,201,675 (269)

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

Making palaeoclimatology research policy‐relevant: Insights and experience from the DECADAL Project

Journal of Quaternary Science, EarlyView.
ABSTRACT Quaternary palaeoclimatology uniquely provides insights and new evidence about climate variability trends and extremes prior to the instrumental record; yet, its knowledge is rarely integrated into governmental decision‐making. This opinion piece shares lessons and experience from the UKRI‐funded DECADAL project, which bridges palaeoclimate ...
Celia Martin‐Puertas, Laura Boyall, Alice M. Milner, Ashley M. Abrook, Amen Al‐Yaari, Alice Carter‐Champion, Daisy Fallows, Katy Flowers, Paul Lincoln, Simon Blockley, Achim Brauer, Armand Hernandez, Gordon N. Inglis, Pete Langdon, Jürg Luterbacher, Antti E. K. Ojala, Adam Scaife, Didier Swingedouw, Louise Wilson   +18 more
wiley   +1 more source

Seismic Stratigraphy of a Circular Concave-Downward Structure, Chukchi Sea [PDF]

, 2017
A circular concave-downward structure (CCDS) and its structural features and seismic facies can be observed in several 2D seismic lines imaging the Chukchi Sea planning area. The area in question is largely underexplored and the data coverage is limited.
Ruiz Lozano, Andres Hernan
core  

New geochronological constraints on Late Pleistocene glaciation in the southern Cadí Massif, SE Pyrenees

Journal of Quaternary Science, EarlyView.
ABSTRACT The Cadí Massif (42°17′09″ N, 1°38′11″ E; 2649 m a.s.l.) in the southeastern Pyrenees preserves clear evidence of Late Pleistocene glaciation, although previous research has focused almost exclusively on its northern slope. By contrast, the southern slope has remained largely unexplored.
M. Oliva, J. Ventura, A. Çiner, M. A. Sarıkaya, J. Bonsoms, K. M. Wilcken   +5 more
wiley   +1 more source

Geology of the Upper Cretaceous and part of the lower tertiary between the Rio Aragon subordan and the Rio Gallego (Spanish Pyrenees, province of Huesca) [PDF]

, 1968
This study deals with the stratigraphy sis forms part of the geological investigations and the tectonics of the Upper Cretaceous gations and part of the Lower Tertiary between Pyrenees, under the Rio Aragon Subordan (western boundary) and the Rio ...
Stratigraphy & paleontology, Jeurissen, G.F.J., IVAU: Instituut voor Aardwetenschappen Utrecht   +2 more
core   +1 more source

Orbitally Paced Carbon and Deep-Sea Temperature Changes at the Peak of the Early Eocene Climatic Optimum [PDF]

, 2018
The late Paleocene to early Eocene warming trend was punctuated by a series of orbitally paced transient warming events, associated with the release of isotopically light carbon into the ocean-atmosphere system. These events occurred throughout the early
Lourens, Lucas J., Lourens, Lucas J, Lauretano, Vittoria, Stratigraphy & paleontology, Zachos, James C, Zachos, James C., James C. Zachos, Lucas J. Lourens, Stratigraphy and paleontology, Vittoria Lauretano   +9 more
core   +2 more sources

Stable isotope analysis of freshwater gastropod carbonates from Swanscombe: Insights into climate stability and seasonality during MIS 11c

Journal of Quaternary Science, EarlyView.
ABSTRACT Stable isotope analyses of freshwater mollusc carbonate can record environmental conditions at the time of mineralisation, yet this technique remains underused in British Middle Pleistocene fluvial sequences, despite the abundance of fossil shell material in these deposits.
Jennifer E. Sherriff, Ian Candy, Adrian P. Palmer, Danielle C. Schreve, Tom S. White   +4 more
wiley   +1 more source

Applicability of dinoflagellate cyst stratigraphy to the analyses of passive and active tectonic settings [PDF]

, 1995
The notion that fluctuating tectonic stress patterns within or between continental plates directly influence the development of a given sedimentary basin is a well-established concept in geotectonics.
Stratigraphy & paleontology, IVAU: Instituut voor Aardwetenschappen Utrecht, Wilpshaar, M., Dep Aardwetenschappen   +3 more
core   +1 more source

Responses of primary producers, anoxia, and chemical feedback to Late Glacial climate change: Insights from a paired lake approach

Journal of Quaternary Science, EarlyView.
Abstract Worldwide, lacustrine ecosystems are threatened by eutrophication and deoxygenation. Both processes are driven by the combined effects of human activities and climate change. Understanding the pre‐anthropogenic nexus between warming, eutrophication, deoxygenation, and related feedback is essential to determine how lakes respond to rapid ...
Noé R.M.M. Schmidhauser, Stan J. Schouten, Petra Zahajská, Andrea Lami, Jacqueline F.N. van Leeuwen, Rik Tjallingii, Hendrik Vogel, Martin Grosjean   +7 more
wiley   +1 more source