Results 101 to 110 of about 14,112 (239)
Meteoritics &Planetary Science, EarlyView.Abstract An unusual chondritic xenolith was found in two sequentially prepared thin sections of a sample from the Krymka (LL3.2) chondrite. The xenolith has a rounded, slightly deformed shape of about 5 mm in apparent diameter and is partially surrounded by a double rim made of an inner fine‐grained silicate‐rich rim and an outer sulfide‐rich rim.
Aelita Girich +6 more
wiley +1 more source
The geological-genetic model of Carlin type gold deposits
Литосфера, 2016 The Carlin type gold deposits (CTGD) presents large metasomatic bodies of jasperoids in carbonate host rocks, that contain finely dispersed submicroscopic gold in disseminated pyrite or marcasite.
A. V. Volkov, A. A. Sidorov
doaj +2 more sources
Ductile Extrusion Triggered by Continental Collision in NE Brazil
Terra Nova, EarlyView.ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser +6 more
wiley +1 more source
Paleomagnetic dating of rocks of the Bolshesyrsky magmatic area of the Minusinsky basin
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о ЗемлеPaleomagnetic dating of the Bolshesyrsky igneous area, a thick intraplate igneous complex of Khakassia, was carried out. The complex has not been dated due to the peculiarities of the stratigraphy and the lack of suitable rocks for applying the methods ...
D.V. Kovalenko, M.V. Buzina
doaj +1 more source
Automated Mineral Identification and Rock‐Type Classification of Lunar Mare Basalts Using SEM Images
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.Abstract We present an automated system for identifying minerals and classifying rock types in Apollo lunar mare basalts using scanning electron microscopy (SEM) imagery. Mineral segmentation is based on a U‐Net architecture, supplemented by two scale‐aware models designed to incorporate pixel size information.
Ji‐In Jung +3 more
wiley +1 more source
Petrography class expedition on the Gunpowder River
, 1923 Caption: Expedition on the Gunpowder River, near Baltimore, taken by the Class in Petrography, headed by Dr. Mathews.
core
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract The Arabian Peninsula encompasses one of the world's most extensive aeolian systems, yet the provenance and transport history of its dune sediments are not well understood. Using hyperspectral data from NASA's Earth Surface Mineral Dust Source Investigation (EMIT), we mapped mineral compositions and abundance patterns across dune fields and ...
Ahmed Alshakr +8 more
wiley +1 more source
Russian Journal of Earth SciencesThe article presents the results of a comprehensive analysis of fault tectonics in the north-western part of the Verkhoyan-Kolyma orogenic region. The studies were performed on a regional scale. Based on a digital relief model, lineaments were identified
Minaev Vasilii +6 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract The North Qiangtang Block occupies a pivotal position within the eastern Tethyan realm, and its paleogeographic reconstruction is critical for constraining Tethyan geometry and evolution. However, its Late Paleozoic paleogeography and Paleo‐Tethyan Ocean–continent configuration remain controversial due to limited reliable age‐constrained ...
Jiahui Zhang +12 more
wiley +1 more source
(Table 1) Petrography of Fe-Ti oxide gabbros from ODP Hole 118-735B
, 1991 (Table 1) Petrography of Fe-Ti oxide gabbros from ODP Hole 118 ...
Peter S Meyer (6963035) +5 more
core +1 more source