Rapid uplift and crustal growth in extensional environments: An isotopic study from the Death Valley region, California

Geology ◽  
1990 ◽  
Vol 18 (3) ◽  
pp. 223 ◽  
Author(s):  
Yemane Asmerom ◽  
J. Kent Snow ◽  
Daniel K. Holm ◽  
Stein B. Jacobsen ◽  
Brian P. Wernicke ◽  
...  
2001 ◽  
Vol 172 (3) ◽  
pp. 333-342 ◽  
Author(s):  
Mireille Polve ◽  
Rene C. Maury ◽  
Philippe Vidal ◽  
Bambang Priadi ◽  
Herve Bellon ◽  
...  

Abstract Acidic potassic calc-alkaline (CAK) magmas have been emplaced in the central part of the western arm of Sulawesi from 6.5 to 0.6 Ma, mostly as peraluminous dacites, rhyolites and granites. They overlay or crosscut a high-grade metamorphic basement including lower crustal garnet peridotites and granulites, the latter showing evidences for incipient melting during rapid uplift. Major and trace element data coupled with a Sr, Nd and Pb isotopic study of the CAK magmas and their lower crustal basement rocks demonstrate that they share a number of common features, including radiogenic Sr and Pb and unradiogenic Nd signatures, consistent with those of Australian granulites and Indian Ocean sediments. We propose that the CAK magmas derived from the anatexis of lower crustal rocks of Australian origin (the Banggai-Sula microcontinent) during the phase of uplift which followed their collision with the Sundaland margin (the western arm of Sulawesi) during the Middle Miocene, and possibly the breakoff of the subducted Molucca Sea slab.


2016 ◽  
Vol 39 ◽  
pp. 134-137 ◽  
Author(s):  
Giovanni Vespasiano ◽  
Carmine Apollaro ◽  
Luigi Marini ◽  
Rocco Dominici ◽  
Giuseppe Cianflone ◽  
...  

2003 ◽  
Vol 21 (4) ◽  
pp. 302-306 ◽  
Author(s):  
C. S. Fowler ◽  
P. Esteves ◽  
G. Goad ◽  
B. Helmer ◽  
K. Watterson

2020 ◽  
Author(s):  
Darko Stojanovski ◽  
Ivana Živaljević ◽  
Vesna Dimitrijević ◽  
Julie Dunne ◽  
Richard Evershed ◽  
...  

The application of biomolecular techniques to archaeological materials from the Balkans is providing valuable new information on the prehistory of the region. This is especially relevant for the study of the neolithisation process in SE Europe, which gradually affected the rest of the continent. Here, to answer questions regarding diet and subsistence practices in early farming societies, we combine organic residue analyses of archaeological pottery, taxonomic and isotopic study of domestic animal remains and biomolecular analyses of human dental calculus. The results from the analyses of the lipid residues from pottery suggest that milk was processed in ceramic vessels. Dairy products were shown to be part of the subsistence strategies of the earliest Neolithic communities in the region but were of varying importance in different areas of the Balkan. On the other hand, we did not confidently detect any milk proteins within the dental calculus. The molecular and isotopic identification of meat, dairy, plants and beeswax in the pottery lipids also provided insights into the diversity of diet in these early Neolithic communities. We also present the first compound-specific radiocarbon dates for the region, obtained directly on absorbed organic residues extracted from pottery, identified as dairy lipids.


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