Results 41 to 50 of about 5,596 (229)

The Age and Origin of Block Deposits in the Victorian Alps, Australia

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows, Michelle S. Worland, Julian Murton, Stephanie C. Mills, L. Keith Fifield   +4 more
wiley   +1 more source

Geochronology of metasedimentary and igneous rocks in the Lamboo Province, Kimberley region: reassessing collisional geodynamic models

, 2022
ISBN : 978-1-74168-964-8 / ISSN : 1834-2280U–Pb and Lu–Hf isotope data for detrital zircons from metasedimentary rocks of the Lamboo Province have been used to test collisional and intraplate geodynamic models for the Paleoproterozoic development of the ...
Lu, Yong-Jun, Fielding,, Ioh, Kirkland, Christopher, Korhonen, Fawna, J., Zhao, J, Poujol, Marc, Murphy, Rosanna, Maidment, D.W., Phillips, Christopher, Wingate, M.T.D., Tilhac, Romain   +10 more
core   +2 more sources

Crustal recycling and metamorphic dehydration govern the fertility of granite-associated tin systems

Communications Earth & Environment
Tin is a critical metal predominantly sourced from granite-associated deposits linked to anatexis of metasedimentary rocks and extreme magmatic differentiation.
Xiang Sun, Huan-Chao Xu, Zhi-Ming Yang, Yong-Jun Lu, Ming-Jun Zheng, Run-Sheng Yin, Pete Hollings, Jin-Long Ma, Qing-Fei Wang, Jun Deng   +9 more
doaj   +1 more source

Tracing Identity in a Fragmented Past: Multi‐Proxy Analysis of Human Skeletal Remains From Dungowan Creek, New South Wales, Australia

Archaeometry, EarlyView.
ABSTRACT Human skeletal remains constitute critical archaeological evidence for reconstructing past societies, yet their investigation requires careful ethical, cultural, and legislative consideration. This paper reports on the discovery, recovery and analysis of a set of skeletal remains encountered during a cultural heritage management (CHM ...
Antonella Skepasianos, Cameron Neal, Sarah Croker, Anthony Dosseto, Michelle Fermor, Steve Talbott, Warren Mayers, Joel Mason, Florian Dux, Luke Kirkwood, Pamela Kottaras, Alan N. Williams   +11 more
wiley   +1 more source

First report of an Ediacarian basement in the Western Alps: the Serre Chevalier crystalline unit (Briançonnais domain, France)

BSGF - Earth Sciences Bulletin, 2023
We report new LA-ICP-MS U-Pb zircon ages of varied crystalline rocks occurring in the Serre Chevalier crystalline terrain, an allochtonous basement unit located at the top of the Briançonnais nappes stack ∼5 km west of Briançon city.
Thiéblemont Denis, Jacob Jean-Baptiste, Lach Philippe, Guerrot Catherine, Leguérinel Mathieu   +4 more
doaj   +1 more source

The origin of Proterozoic massif-type anorthosites: Evidence from interactions between crustal xenoliths and basaltic magma [PDF]

, 1999
Plagioclase-rich reaction zones occur around numerous aluminous crustal xenoliths within a suite of Palaeogene sub-volcanic basic sheets on the Isle of Mull, NW Scotland.
Preston, R.J., Bell, B.R., Dempster, T.J.   +2 more
core  

Provenance and depositional age of Paleoproterozoic metasedimentary rocks in the Kuluketage Block, northern Tarim Craton: Implications for tectonic setting and crustal growth

, 2015
Precambrian geology of the Tarim Craton, especially for the crustal evolution, is poorly constrained. Paleoproterozoic metasedimentary rocks are extensively exposed in the Kuluketage Block, northern Tarim Craton, and thus have recorded abundant ...
Yuan, C., Long, X., Sun, M, Long, X, Hu, A, Hu, A., Wilde, Simon, Sun, M., Yuan, Chao, Hu, Aiqin, Sun, Min, Wilde, SA, Long, Xiaoping, Wilde, Simon A., Yuan, C   +14 more
core   +1 more source

Weichselian history of the Fennoscandian Ice Sheet centre, Kvarken archipelago, western Finland—flow shifts, thermal regime and deglaciation

Boreas, EarlyView.
Rapid thaw of the Earth's cryosphere in response to anthropogenic warming highlights the need to identify and understand the contrasting signatures of past ice‐sheet stability and collapse. The Kvarken archipelago, western Finland, at the centre of the former Fennoscandian Ice Sheet (FIS), has been designated a UNESCO World Heritage site in recognition
Niko Putkinen, Tapani Tervo, Adrian M. Hall, Juha P. Lunkka, Pertti Sarala, Olli Breilin, Jari Nenonen   +6 more
wiley   +1 more source

LITHOSTRUCTURAL RELATIONSHIPS AND PETROGENETIC AFFINITIES OF THE BASEMENT COMPLEX ROCKS AROUND OKPELLA, NIGERIA [PDF]

Earth Science Malaysia, 2018
Okpella area is the eastern extension of the Igarra Schist Belt, Southwestern Nigerian Basement Complex. The area comprises granite gneiss, metasedimentary rocks and Pan-African intrusives.
Ogunyele, A. C., Obaje, S. O.,, Akingboye, A. S.   +2 more
doaj  

Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer, Christopher L. Kirkland, Hugo Olierook, Tim Johnson, Katy Evans   +4 more
wiley   +1 more source