Results 101 to 110 of about 28,093 (233)

Geology and petrology of the Salto do Céu Suite: tectonic and stratigraphic implications on the SW Amazonian Craton

Brazilian Journal of Geology
: The basic rocks of the Salto do Céu Suite outcrop as sills and flows in the southwestern Amazon Craton, Rondonian-San Ignacio Province, with an age of about 1.44 Ga. Sills are 2 to 30 m thick being hosted by pelites of the Aguapei Group.
Gabrielle Aparecida de Lima, Moacir José Buenano Macambira, Maria Zélia Aguiar de Sousa, Amarildo Salina Ruiz, Maria Elisa Fróes Batata, Ronaldo Pierosan   +5 more
doaj   +1 more source

Asteroidal differentiation processes deduced from ultramafic achondrite ureilite meteorites [PDF]

, 2006
Ureilite meteorites are partial melt residues of an asteroid-sized object. They record the differentiation process that transformed many asteroids during the earliest stages of solar system ...
Downes, H., Franchi, I.A., Hudon, P., Mittlefehldt, D.W., Romanek, C.S.   +4 more
core   +1 more source

Workshop on Moon in Transition: Apollo 14, KREEP, and Evolved Lunar Rocks [PDF]

Lunar rocks provide material for analyzing lunar history and now new evaluation procedures are available for discovering new information from the Fra Mauro highlands rocks, which are different from any other lunar samples.
Taylor, G. J., Warren, P. H.
core   +1 more source

Petrogenesis of Liucun pluton in the eastern section of Jiangnan orogenic belt，China: zircon U-Pb age, petrogeochemistry and Sr-Nd -Hf isotope characters

All Earth
The Liucun pluton, located in the eastern part of the Jiangnan orogenic belt in eastern China, is mainly composed of monzogranite and granite, with subsequent intrusions of syenogranite.
Fang Chen, Jianguo Du, Jingjing Chen, Mingming Sun, Xunfei Li   +4 more
doaj   +1 more source

Mantle dynamics and petrogenesis of Gomer basalts in the Northwestern Ethiopia: A geochemical perspective

Open Geosciences
This study investigates the petrological and geochemical characteristics of basalts from the Gomer area in the Northwestern Ethiopian Volcanic Province to explore their petrogenesis and mantle source characteristics.
Wondem Habtamu, Teferi Minyahl, Jothimani Muralitharan, Wondem Demeke   +3 more
doaj   +1 more source

Petrogenesis of Very‐Low‐Ti Basalts Returned by Chang'e‐6 From the Lunar Farside

Geophysical Research Letters
Lunar volcanism provides critical insights into the Moon's thermochemical evolution. We present petrological and geochemical analyses of six very‐low‐Ti (VLT) basalt fragments from Chang'e‐6 (CE6) samples. These basalts yield a Pb‐Pb age of around 2.9 Ga,
Shitou Wu, Di Zhang, Heng‐Ci Tian, Wei Yang, Hao Wang, Yueheng Yang, Xu Tang, Chao Huang, Lihui Jia, Qiuli Li, Qin Zhou, Yi Chen, Sen Hu, Xian‐Hua Li, Fu‐Yuan Wu   +14 more
doaj   +1 more source

Rapid transition from primary to secondary crust building on the Moon explained by mantle overturn. [PDF]

Nat Commun, 2023
Prissel TC, Zhang N, Jackson CRM, Li H.
europepmc   +1 more source

Comments on Ringwood's paper 'Petrogenesis of Apollo 11 basalts and implications for lunar origin' [PDF]

Apollo 11 basalt petrogenesis and theories of lunar evolution comparing lunar and earth ...
Singer, S. F.
core   +1 more source

Origin of Early Triassic Hornblende Gabbro from the Yunkai Massif, South China: Constraints from Mineral and Bulk-Rock Geochemistry

Geosciences
The early Triassic (~250 Ma) hornblende gabbro from the Tengxian area of Yunkai Massif, South China, contains a mineral assemblage of clinopyroxene, hornblende, biotite, plagioclase, K-feldspar and quartz and accessory apatite, and zircon and ilmenite ...
Yaqian Wen, Feng Guo, Liang Zhao
doaj   +1 more source

Granitic rocks and metasediments in Archean crust, Rainy Lake area, Ontario: ND isotope evidence for mantle-like SM/ND sources [PDF]

Granitoids, felsic volcanic rocks and clastic metasediments are typical rocks in Archean granite-greenstone belts that could have formed from preexisting continentasl crust.
Hanson, G. N., Shirey, S. B.
core   +1 more source