Gold Mineralization within Sonakhan Schist Belt, Central India

ISBN-13: 9783845411828 / Angielski / Miękka / 240 str.

Sahendra Singh; A. S. Venkatesh

Opis

The late Archean-Paleoproterozoic Sonakhan schist belt occurs within the Raipur District of Chhattisgarh and forms north-eastern part of the Central Indian Craton (CIC)/ Bastar block of Central India.The NW-SE trending Sonakhan schist belt forms a broad synformal basin with steep dipping NNW-SSE trending axial surfaces.The volcano-sedimentary associations in this area contain a complete greenstone sequence consisting of mafic volcanic rocks, felsic volcanic rocks, Banded Iron Formation (BIF).Gold mineralization is associated with volcano-sedimentary sequence in the form of auriferous veins (quartz ± sulfide ± carbonate veins within mafic, felsic volcanic rocks and within sulfide facies BIF).The gold mineralization exhibits both lithological and structural controls.Geochemically, the volcanic rocks of Sonakhan belt behave like a single coherent group with low HFSE contents (Nb, Zr, Hf, etc) and exhibit the characteristics of back-arc basin tectonic environment.The hydrothermal alterations in the study area are quite pronounced.The tectonic and fluid evolution model at Sonakhan schist belt favor the Autochthonous type of Geodynamic setting.

O autorze

Dr S.Singh is working as a faculty in the Dept.of Applied Geology, ISM, Dhanbad, India.He works on Gold Metallogeny. A.S.Venkatesh_____________________Prof.A.S.Venkatesh is a renowned economic Geologist and a senior faculty of the Dept.of Applied Geology,Indian School of Mines (ISM), Dhanbad, India.He works on genesis of Gold and Iron Deposits.