Results 51 to 60 of about 19,957 (229)
Terra Nova, EarlyView.ABSTRACT The Paleoproterozoic Talvivaara mudstone is a very large sulfidic Ni‐Co deposit that records enhanced organic matter accumulation during the global Shunga Event. Here, rock geochemistry and microscale S and Fe isotope composition of in situ pyrrhotites and pyrites are studied in well‐characterised, well‐preserved drill core samples.
Raimo Lahtinen +3 more
wiley +1 more source
Masirah – The other Oman ophiolite: A better analogue for mid-ocean ridge processes? [PDF]
, 2017 Oman has two ophiolites – the better known late Cretaceous northern Oman (or Semail) ophiolite and the lesser known and smaller, Jurassic Masirah ophiolite located on the eastern coast of the country adjacent to the Indian Ocean.
Anonymous +57 more
core +2 more sources
Ophiolite-Hosted Diamond: A New Window for Probing Carbon Cycling in the Deep Mantle
Engineering, 2019 As reported in our prior work, we have recovered microdiamonds and other unusual minerals, including pseudomorph stishovite, moissanite, qingsongite, native elements, metallic alloys, and some crustal minerals (i.e., zircon, quartz, amphibole, and rutile)
Dongyang Lian, Jingsui Yang
doaj +1 more source
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
Post-depositional tectonic modifications of VMS deposits in Iberia and its economic significance [PDF]
, 2011 The original stratigraphic relationships and structure of VMS deposits are commonly obscured by deformation. This can also affect their economic significance, as shown by several Iberian Pyrite Belt (IPB, SW Iberia) examples.
Castroviejo Bolibar, Ricardo +2 more
core +2 more sources
Геодинамика и тектонофизика, 2017 The South Tianshan is located to the north of the Tarim block and defines the southern margin of the Paleozoic Central Asian Orogenic Belt (CAOB). This study presents new structural data, geochronological and geochemical results for the Wuwamen ophiolite
Bo Wang +8 more
doaj +1 more source
Geosystems and Geoenvironment, 2023 The Northern Calcareous Alps in the Western Tethys realm were affected in Middle to Late Jurassic times by a mountain building process triggered by ophiolite obduction similar to that in the Inner Western Carpathians or Inner Dinarides.
Sebastian P. Drvoderic +3 more
doaj +1 more source
Exhumation history of eastern Ladakh revealed by Ar-40/Ar-39 and fission-track ages: the Indus River-Tso Morari transect, NW Himalaya [PDF]
, 2003 Fission-track and Ar-40/Ar-39 ages place time constraints on the exhumation of the North Himalayan nappe stack, the Indus Suture Zone and Molasse, and the Transhimalayan Batholith in eastern Ladakh (NW India).
Carter, Andrew +3 more
core +1 more source
Ophiolites and ophiolitic melanges of Turkey: A review
, 2013 The aim of the presented study is to review the ophiolites and ophiolitic mélanges of Turkey and their importance for constraints on the evolution of the region. On the basis of the existing data, the ophiolitic associations of Turkey are classified into three main groups. 1.
Yılmaz, Ali, Yılmaz, Hüseyin
openaire +3 more sources
Chemical weathering and provenance evolution of Holocene–Recent sediments from the Western Indus Shelf, Northern Arabian Sea inferred from physical and mineralogical properties [PDF]
, 2012 We present a multi-proxy mineral record based on X-ray diffraction and diffuse reflectance spectrophotometry analysis for two cores from the western Indus Shelf in order to reconstruct changing weathering intensities, sediment transport, and provenance ...
Clift, Peter D. +5 more
core +2 more sources