Výsledky vyhledávání

Petrological implications of element redistribution during metamorphism: insights from meta-granite of the South Delhi Fold Belt, Rajasthan, India

Autor: Upama Dutta, Ayan Kumar Sarkar, Sadhana M. Chatterjee, Anirban Manna, Alip Roy, Subhrajyoti Das

Publikováno v: Geological Magazine. 159:735-760

Meta-granites of the South Delhi Fold Belt, northwestern India, contain spectacular reaction textures formed during the metamorphic replacement of primary minerals. Textural relationships imply that amphibole was replaced sequentially in two stages.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ce646b74970afc91c25c0eab02b036d
https://doi.org/10.1017/s0016756821001345

Zobrazit plný text záznamu

Origin of corundum within anorthite megacrysts from anorthositic amphibolites, Granulite Terrane, Southern India

Autor: Upama Dutta, Subham Mukherjee, Shreya Karmakar

Publikováno v: American Mineralogist. 105:1161-1174

Growth of corundum in metamorphosed anorthosites and related basic-ultra-basic rocks is an exceptional feature, and its origin remains elusive. We describe the occurrence of and offer an explanation for the genesis of corundum in anorthositic amphibo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3c7df5636d0dd4f9a3f3a1f36a4215be
https://doi.org/10.2138/am-2020-7108

Zobrazit plný text záznamu

Genesis of coronae and implications of an early Neoproterozoic thermal event: a case study from SE Chotanagpur Granite Gneissic Complex, India

Autor: Upama Dutta, Vedanta Adak

Publikováno v: Geological Magazine. 158:199-218

Partial equilibrium textures such as corona provide information on changing pressure–temperature (P-T) conditions experienced by a rock during its geological evolution. Coronae layers may form in single or multiple stages; understanding the genesis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07687ca41e42b214a6a743c316bfc8a5
https://doi.org/10.1017/s0016756820000357

Zobrazit plný text záznamu

High pressure metamorphism of mafic granulites from the Chotanagpur Granite Gneiss Complex, India: Evidence for collisional tectonics during assembly of Rodinia

Autor: Sanjoy Sanyal, Pulak Sengupta, Shreya Karmakar, Upama Dutta, Anindita Dey, Subham Mukherjee

Publikováno v: Journal of Geodynamics. 129:24-43

In the north-eastern part of the Chotanagpur Granite Gneiss Complex (CGGC), India, mafic granulite occurs as enclaves within the ˜1450 Ma old felsic rocks. The mafic granulite and the host felsic rock develop a pervasive planar fabric defined by min

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5e232cc2753897effc8ea7d68a50a7e
https://doi.org/10.1016/j.jog.2019.03.005

Zobrazit plný text záznamu

Insights on the process of two-stage coronae formation at olivine-plagioclase contact in mafic dyke from Palghat Cauvery Shear Zone, southern India

Autor: Upama Dutta, R. Anand, Z. D. Atlas, Meenakshi Banerjee

Publikováno v: Mineralogy and Petrology. 113:625-649

Coronae between olivine and plagioclase are a common replacement texture in mafic rocks by magmatic and metamorphic processes. Mafic dykes from Palghat Cauvery Shear Zone (PCSZ) of the granulite terrane of southern India display such multilayer coron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60d80937fb0a5e67f64080e754eb271d
https://doi.org/10.1007/s00710-019-00674-y

Zobrazit plný text záznamu

Plný text ve formátu HTML

Vyhledávací nástroje:

Upřesnit hledání