Results 71 to 80 of about 7,236 (215)

SHRIMP U-Pb Geochronology of the Socorro Batholith and implications for the Neoproterozoic evolution in SE Brazil

Brazilian Journal of Geology
: The Socorro Batholith is one of the most expressive granite manifestations associated with the Neoproterozoic evolution in SE Brazil, occupying large areas (~1,200 km 2 ) in the southern portion of the Socorro-Guaxupé Nappe.
Bárbara Bueno Toledo, Valdecir de Assis Janasi, Luiz Gustavo Ribeiro da Silva   +2 more
doaj   +1 more source

Drainage Pattern Changes in Southeastern Tibet Inferred from Eocene–Modern Sediment Provenance of the Yanyuan Basin

Basin Research, Volume 37, Issue 6, November/December 2025.
Deep gorges with abrupt river elbows and high‐elevation, low‐relief interfluves containing fluvial sedimentary rocks characterize southeastern Tibet. This transient landscape reflects Eocene to present drainage divide migrations and river captures, reshaping catchment boundaries through episodic exchanges of drainage area between neighboring basins ...
Xilin Sun, Maria Giuditta Fellin, Sean Douglas Willett, Klaudia F. Kuiper, Yuntao Tian, Zengjie Zhang, Rujun Guo, David Chew, Marcel Guillong, Foteini Drakou, Jan R. Wijbrans   +10 more
wiley   +1 more source

Physicochemical Attributes of Parental Magma in Collisional Porphyry Copper Systems; Using Biotite Chemistry, Case Study: Chahfiruzeh Porphyry Copper Deposit

Journal of Economic Geology, 2019
Introduction Almost all of the well-known porphyry copper deposits in Iran occur within the Kerman Cenozoic magmatic arc (KCMA) (Fig 1) in the southeastern part of Cenozoic Urumieh–Dokhtar magmatic belt (Hassanpour et al., 2015). The Miocene Chahfiruzeh
Majid Heidari, Alireza Zarasvandi, Mohsen Rezaei, Johann Raith, Adel Saki   +4 more
doaj   +1 more source

Tectonic evolution of the Dom Feliciano Belt in Southern Brazil : geological relationships and U-Pb geochronology [PDF]

, 2016
O Cinturão Dom Feliciano, que se estende desde o leste do Uruguai até o sul do Brasil, representa um importante orógeno Neoproterozoico formado pela colagem de domínios oceânicos e fragmentos continentais entre os crátons Rio de La Plata, Congo e ...
Chemale Jr, Farid, Philipp, Ruy Paulo, Pimentel, Marcio Martins   +2 more
core   +2 more sources

Precambrian Greenstone Belts of North Baffin Island, Canadian Arctic: Geochronological Constraints on Magmatism and Stratigraphy in the Rae Craton

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract Supracrustal greenstone belts of the Rae craton of north Baffin Island have been historically attributed to the Mary River Group (MRG), a key tectonostratigraphic unit of economic significance. Best‐preserved exposures of supracrustal rocks occur within the Eqe Bay Greenstone Belt.
B. M. Saumur, C.‐P. Folkesson, D. R. Skipton, J. H. F. L. Davies, N. Wodicka, S. T. Johnston   +5 more
wiley   +1 more source

Shrimp U-Pb Geochronology Final Report

, 2019
Fil: Ireland, MSc. Australian Geological Survey Organisation; Australia.
Camacho, A., Ireland, MSc, Ireland, T.R.
openaire   +1 more source

Precise Sm-Nd and U-Pb isotopic dating of the supergiant Shizhuyuan polymetallic deposit and its host granite, SE China [PDF]

, 2004
The supergiant Shizhuyuan W-Sn-Bi-Mo deposit is hosted by the Qianlishan granite, a small, highly fractionated granitic pluton (~10 km2) with multiple phases of intrusions within the Early Yanshanian granitoid province of SE China.
Li, WX, Li, XH, Liang, XR, Liu, D, Liu, Y, Sun, M   +5 more
core   +1 more source

1.38 Ga Four‐Layer Tuff Marker Horizon in North China black Shales as a Chronostratigraphic Boundary for the Pre‐Ediacaran Geological Timescale

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Boundaries in the Phanerozoic chronostratigraphic scale are mainly precisely defined and dated, and many correspond to environmental catastrophes induced by the emplacement of LIPs. The pre‐Ediacaran geological timescale is currently subdivided by approximate absolute ages.
Shuan‐Hong Zhang, Sandra L. Kamo, Richard E. Ernst, Jun‐Ling Pei, Guo‐Hui Hu, Qi‐Qi Zhang, Hafida El Bilali, Yue Zhao   +7 more
wiley   +1 more source

Pan-African metamorphic and magmatic rocks of the Khanka Massif, NE China: Further evidence regarding their affinity [PDF]

, 2010
The Khanka Massif is a crustal block located along the eastern margin of the Central Asian Orogenic Belt (CAOB) and bordered to the east by Late Jurassic-Early Cretaceous circum-Pacific accretionary complexes of the Eastern Asian continental margin.
Wang, H, Wilde, SA, Zeng, WS, Zhang, XZ, Zhao, GC, Zheng, CQ, Zhou, JB   +6 more
core   +1 more source

Zircon (Re)crystallization During Metamorphism: Zircon Paragenesis in the Papua New Guinea Coesite Eclogite Revisited

Journal of Metamorphic Geology, Volume 43, Issue 7, Page 663-680, September 2025.
ABSTRACT The youngest known ultrahigh‐pressure (UHP) eclogite from Tumagabuna Island, a small island of the D'Entrecasteaux Islands chain in Papua New Guinea, exhibits zircon U–Pb age variations spanning a few million years. This age variation complicates the interpretation of the evolution of this high and ultrahigh‐pressure ([U]HP) terrane.
Linus B. Streicher, Fraukje M. Brouwer, Keewook Yi, Suzanne L. Baldwin, Wim van Westrenen   +4 more
wiley   +1 more source