Results 71 to 80 of about 704,528 (294)

Early Neoproterozoic limestones from the Gwna Group, Anglesey [PDF]

, 1998
Limestone megaclasts up to hundreds of metres in size are present within the Gwna Group mélange, North Wales, UK. The mélange has been interpreted as part of a Peri-Gondwanan fore-arc accretionary complex although the age of deposition remains ...
JANA M. HORÁK, JANE A. EVANS, O'Brian, Blatt, Matthew, Shackleton, Dickin, Gibbons, Denison, McCausland, Montañez, Schuster, Shackleton, Shields, Walter, White, Wood   +16 more
core   +4 more sources

Review for "Mesozoic–Cenozoic tectonic controls on the formation of large‐scale metamorphic rock buried‐hill reservoirs in Bozhong Sag, eastern China" [PDF]

, 2021
Balen Bhagabaty
openalex   +2 more sources

Calc-silicate rocks and marbles from Lutzow-Holm Complex,East Antarctica, with special reference to the mineralogy and geochemical characteristics of calc-silicate mega-boudins from Rundvagshetta [PDF]

, 2006
We report here the mode of occurrence of calc-silicate rocks and marbles from the Lutzow-Holm Complex, East Antarctica, and a worked example from Rundvagshetta.
M. Satish-Kumar, Shin-ichi Kagashima, Yoichi Motoyoshi, Yoshikuni Hiroi, Yoshimitsu Suda   +4 more
core   +1 more source

Deeply subducted continental fragments - Part 2: Insight from petrochronology in the central Sesia Zone (western Italian Alps) [PDF]

, 2018
Subducted continental terranes commonly comprise an assembly of subunits that reflect the different tectono-metamorphic histories they experienced in the subduction zone.
Burn, Marco, Engi, Martin, Giuntoli, Francesco, Kunz, Barbara Eva, Lanari, Pierre   +4 more
core   +3 more sources

⁸⁷Sr/⁸⁶Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales [PDF]

, 2004
New calcite ⁸⁷Sr/⁸⁶Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic-Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawater <sup>
Ellam, R.M., Fallick, A.E., Graham, C.M., Thomas, C.W.   +3 more
core   +1 more source

Biotite as a petrogenetic discriminator in the polymetamorphosed rocks: A case study from the Champaner supracrustal rocks, Western India

Geosystems and Geoenvironment
The mineral chemistry of Fe-Mg biotite has served as an aid to the petrogenesis of igneous rocks, especially for identifying the parent magma compositions. Though the interpretation of igneous and metamorphic processes utilizing biotite mineral chemistry
Parita K. Gorania, Gayatri N. Akolkar, Aditya U. Joshi, Manoj A. Limaye, Mahendra K. Singh   +4 more
doaj   +1 more source

Neoproterozoic ultramafic and mafic magmatism in the Eastern Cordillera of the central peruvian Andes: the Tapo Massif [PDF]

, 2010
A highly dismembered assemblage of ultramafic and mafic rocks is exposed in the Eastern Cordillera of the Central Peruvian Andes, extending along a discontinuous NW-SE belt over some 250 km between 12° and 9° S of latitude.
Acosta, Jorge, Castroviejo Bolibar, Ricardo, Pereira, Eurico, Rodrigues, Jose F., Tassinari, Colombo G.   +4 more
core   +2 more sources

Ar-40/Ar-39 dating of mesothermal, orogenic mineralization in a low-angle reverse shear zone in the Lower Palaeozoic of the Anglo-Brabant fold belt, Belgium [PDF]

, 2002
A
Boven, A., Dewaele, Stijn, Muchez, Ph.
core   +2 more sources

Geochronology of metamorphic rocks

, 2004
Metamorphic minerals are formed at moderate to high depth in the Earth's interior. Those that have been subsequently exhumed to the Earth's surface are those that survived metastably outside their stability fields. The majority of studied metamorphic rocks did not survive unscathed, and contains diachronic mineral assemblages that record a plurality of
openaire   +4 more sources

Investigation on the changing law of magnetoelectric anomalies in variable temperature coal rocks

Results in Engineering
The changing law of magnetoelectric anomalies in the metamorphic process of coal rock bodies is of great significance to the prediction and study of fire in hidden coal fields.
Xiaokun Zhao, Jun Ge, An Zhang, WenCai Wang   +3 more
doaj   +1 more source