Results 71 to 80 of about 128,769 (349)

Sedimentary facies and architecture of mixed bioclastic‐siliciclastic deposits forming in an inferred strait environment: An example from the Early Pleistocene of Calabria, southern Italy

The Depositional Record, EarlyView.
Early Pleistocene mixed arenites and their associated conglomerates and sandstones were studied in detail in Calabria, southern Italy. This study suggests that the studied palaeo‐strait was not necessarily a wider and similarly oriented expression of the modern Strait of Messina.
Svea Franke, Effi‐Laura Drews, Ernesto Schwarz, Marcello Gugliotta   +3 more
wiley   +1 more source

Chemical and textural equilibration of garnet during amphibolite-facies metamorphism: The influence of coupled dissolution-reprecipitation [PDF]

, 2017
Metamorphic equilibration requires chemical communication between minerals and may be inhibited through sluggish volume diffusion and or slow rates of dissolution in a fluid phase.
Albee, Albee, Baltatzis, Barrow, Baxter, Bell, Bell, Brooks, Bucher, Béthune, Caddick, Carlson, Carlson, Carlson, Carlson, Carmichael, Cartwright, Centrella, Chernoff, Chinner, Connolly, Connolly, Dempster, Dempster, Dempster, Dempster, Dempster, Dempster, Dempster, Dohmen, Droop, England, Erambert, Etheridge, Farber, Ferry, Ferry, Florence, Florence, Frost, Ganguly, Geiger, Groome, Guidotti, Hames, Harris, Harte, Hirsch, Holdaway, Holdaway, Holdaway, Hollister, Jamtveit, Jamtveit, Karabinos, Kelly, Kohn, Kohn, Mahar, Martin, Masters, Moynihan, Mueller, Novak, Oliver, Pattison, Pattison, Phillips, Phillips, Philpotts, Pollok, Putnis, Putnis, Putnis, Putnis, Pyle, Richardson, Robyr, Rubie, Ruiz-Agudo, Ríos, Skelton, Spear, Spear, Spear, Spear, Spear, Thompson, Thompson, Thompson, Tracy, Tuccillo, Vernon, Whitney, Whitney, Whitney, Whitney, Whitney, Yang, Yardley, Yardley, Zeh, Zwart   +102 more
core   +2 more sources

Machine Learning in Petrology: State-of-the-Art and Future Perspectives

Journal of Petrology
The present manuscript reports on the state-of-the-art and future perspectives of Machine Learning (ML) in petrology. To achieve this goal, it first introduces the basics of ML, including definitions, core concepts, and applications.
Maurizio Petrelli
semanticscholar   +1 more source

Comprehensive Evaluation of In‐Situ Stress Field in Ultra‐Deep Bedrock Gas Reservoirs

Energy Science &Engineering, EarlyView.
Log interpretation results diagram of rock mechanical parameters for ultra‐deep bedrock in Well k1‐1. ABSTRACT Ultra‐deep bedrock gas exploration remains at a preliminary stage, where comprehensive in‐situ stress evaluation can provide crucial guidance for sweet spot prediction.
Houjiang Fan, Shuai Yin
wiley   +1 more source

Intergranular diffusion rates from the analysis of garnet surfaces: implications for metamorphic equilibration [PDF]

, 2017
Novel approaches to garnet analysis have been used to assess rates of intergranular diffusion between different matrix phases and garnet porphyroblasts in a regionally metamorphosed staurolite-mica-schist from the Barrovian-type area in Scotland.
Chung, Peter, Dempster, Tim J., Symon, Shona   +2 more
core   +1 more source

Early Cretaceous–Late Miocene Basin–Mountains Pattern in the Northeastern Margin of the Tibetan Plateau, NW China: Evidence From Detrital Zircon Chronology in the Lanzhou Basin

Geological Journal, EarlyView.
Using DZmix and DZstats models, we quantified the contributions of potential sources of the Lanzhou basin. Our findings indicate that the Cenozoic cooling and denudation signals primarily originated from Qilian and West Qinling, which were the main sediment sources.
Hang Liu, Hu–jun Gong, Fen–hong Luo, Rui Zhang   +3 more
wiley   +1 more source

Carbonate alteration of ophiolitic rocks in the Arabian–Nubian Shield of Egypt: sources and compositions of the carbonating fluid and implications for the formation of Au deposits [PDF]

, 2016
Ultramafic portions of ophiolitic fragments in the Arabian–Nubian Shield (ANS) show pervasive carbonate alteration forming various degrees of carbonated serpentinites and listvenitic rocks.
Azer, Mokhles K., Boskabadi, Arman, Boyce, Adrian, Broman, Curt, Cooper, Matthew J., Majka, Jaroslaw, Mohamed, Fathy H., Pitcairn, Iain K., Stern, Robert J., Teagle, Damon A.H.   +9 more
core   +2 more sources

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, EarlyView.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Geochemistry and petrogenesis of the Kolah-Ghazi granitoid assemblage, south of Esfahan

Journal of Economic Geology, 2018
Introduction The Kolah-Ghazi granitoid assemblage is located in the south of Esfahan and in the Sanandaj-Sirjan magmatic-metamorphic zone. The Sanandaj-Sirjan zone is extended for 1500 km from Sirjan in the southeast to Sanandaj in the northwest of Iran
Jamshid Ahmadian, Hajar Gholamian, Ali Khan Nasr Esfahani, Maryam Honarmand   +3 more
doaj   +1 more source

Imperial systems and local landscapes of Buldan Yayla in Western Anatolia (Türkiye) during the last 4000 years: An integrated palynological, historical, and archaeological approach

Journal of Quaternary Science, EarlyView.
ABSTRACT This study investigates long‐term impacts of empires on local socio‐ecosystems in western Anatolia (modern western Türkiye) over the past four millennia. We focus on Buldan Yayla Lake, located in a small mountain basin north of the Büyük Menderes (Great Meander) River valley.
Sabina Fiołna, Mustafa Doğan, Warren Eastwood, John Haldon, Georgios C. Liakopoulos, Dilek Şenkul, Çetin Şenkul, Adam Izdebski   +7 more
wiley   +1 more source