PETROGRAPHY AND GEOCHEMISTRY OF METASEDIMENTS FROM BUGAJI, PART OF MALUMFASHI SHEET 79 NE, KANO STATE, NORTHWESTERN NIGERIA [PDF]
Geological Behavior, 2023 This research is aimed at determining the protolith of metasediments that underpin the geology of Bugaji region of Kano State. The study area was mapped systematically and the lithologies encountered include phyllite, undifferentiated schist, quartzo ...
Abdullah Musa Ali +1 more
doaj +1 more source
Geochemical and reflectance spectroscopy data integration to characterize emerald deposits: the case of the Paraná deposit, Brazil [PDF]
Anais da Academia Brasileira de Ciências, 2021 The Paraná emerald deposit is one of the few occurrences of emerald, a rare beryl variety, in Borborema Province, northeastern Brazil. We characterized the Paraná deposit by combining field geology, petrography, whole-rock geochemistry, mineral chemistry,
JOSÉ F. ARAÚJO NETO +4 more
doaj +1 more source
Structural framework and timing of the Pahtohavare Cu ± Au deposits, Kiruna mining district, Sweden [PDF]
Solid Earth, 2023 As part of the larger mineral systems approach to Cu-bearing mineralization in northern Norrbotten, this study utilizes structural geology to set the classic Pahtohavare Cu ± Au deposits into an up-to-date tectonic framework.
L. Logan +4 more
doaj +1 more source
Journal of the Geological Survey of Brazil, 2021 The Querari Complex corresponds to the basement rocks from Uaupés Domain and represents one of the least studied units in the northwest of the Rio Negro Province, Amazonian Craton.
Paulo Jerry Bentes Gomes +4 more
doaj +1 more source
Evolution of structures and hydrothermal alteration in a Palaeoproterozoic supracrustal belt: Constraining paired deformation–fluid flow events in an Fe and Cu–Au prospective terrain in northern Sweden [PDF]
Solid Earth, 2020 An approximately 90 km long Palaeoproterozoic supracrustal belt in the northwestern Norrbotten ore province (northernmost Sweden) was investigated to characterize its structural components, assess hydrothermal alteration–structural geology ...
J. B. H. Andersson +2 more
doaj +1 more source
Influence of reservoir geology on seismic response during decameter-scale hydraulic stimulations in crystalline rock [PDF]
Solid Earth, 2020 We performed a series of 12 hydraulic stimulation experiments in a 20m×20m×20m foliated, crystalline rock volume intersected by two distinct fault sets at the Grimsel Test Site, Switzerland.
L. Villiger +13 more
doaj +1 more source
Journal of Economic Geology, 2021 Introduction The Halab Zn–Pb (Ag) deposit, 125-km southwest of Zanjan, is located in the Takab–Takht-e-Soleyman–Angouran metallogenic district (TTAMD), Sanandaj-Sirjan zone.
Fatemeh Karami +3 more
doaj +1 more source
Foliated affine and projective structures [PDF]
Compos. Math. 159 no. 6 (2023), 1153-1187, 2021 We formalize the concepts of holomorphic affine and projective structures along the leaves of holomorphic foliations by curves on complex manifolds. We show that many foliations admit such structures, we provide local normal forms for them at singular points of the foliation, and we prove some index formulae in the case where the ambient manifold is ...
arxiv +1 more source
Mechanical properties of granulite from Horní Bory in Bohemian massif [PDF]
, 2019 Granulite represents one of the favourite rock types for the construction of an underground nuclear waste repository in the Czech Republic. Granulite from the Bohemian Massif (locality Horní Bory) was investigated in this study, with a special focus ...
Blümel, Manfred +4 more
core +1 more source
Indosinian high-strain deformation for the Yunkaidashan tectonic belt, south China : Kinematics and 40Ar/39Ar geochronological constraints [PDF]
, 2007 Structural and 40Ar/39Ar data from the Yunkaidashan Belt document kinematic and tectonothermal characteristics of early Mesozoic Indosinian orogenesis in the southern part of the South China Block.
Bureau of Geology and Mineral Resources of Guangdong Province (GDBGMR) +90 more
core +1 more source