An example of ridge-proximal hydrothermal mineralisation: evidence from radiolarian chert-hosted Fe-Mn-oxide mineralisation within the İzmir-Ankara-Erzincan Neotethyan Ocean, Central Turkey

Autor:	M. Selman Aydoğan
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	ophiolitic mélange radiolarian chert fe-mn mineralisation hydrothermal origin cihanpaşa central turkey Geology QE1-996.5 Physical geography GB3-5030
Zdroj:	All Earth, Vol 33, Iss 1, Pp 136-160 (2021)
Druh dokumentu:	article
ISSN:	2766-9645 27669645
DOI:	10.1080/27669645.2021.2003009
Popis:	Fe-Mn-oxide (oxyhydroxide) deposits are common within the late Cretaceous mélange units of the İzmir-Ankara-Erzincan Suture Zone, which marks the closure of part of the northern branch of the Neotethys Ocean in Turkey. In the Cihanpaşa region (Yozgat, central Turkey), Fe-Mn mineralisation occurs as interlayers within a sequence of mudstone and siliceous pelagic units that overlies altered pillow lavas belonging to the Artova ophiolitic complex. T-Fe-Mn mineralisations are characterised by moderate amounts of Ba (560 ppm), and low contents of Sr (243 ppm), Co (51 ppm), Zn (183 ppm), and Ni (221 ppm). Mn/Fe (0.69) and low Co/Ni (
Databáze:	Directory of Open Access Journals
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