ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review
นักวิจัย : Iyer, S.D.
คำค้น : hydrothermal activity , tectonics , volcanoes , seamounts , abyssal hills , fracture zone , faults , zeolites
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2548
อ้างอิง : Acta geologica Sinica, Vol.79; 77-86p. , http://drs.nio.org/drs/handle/2264/924
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The Central Indian Basin (CIB, 10 degrees-19 degrees S) encompasses morphotectonic features such as seamounts, abyssal hills, faults, fracture zones and lineations and basic to silicic volcanics that were derived from different sources. Instances of incipient hydrothermal event (s) occurred as evident from: (1) spilites that probably formed due to low-temperature hydrothermal action on the precursory basalts, (2) slabs and fragments of zeolitites which are the consequent products of palagonitization of the basaltic glasses, (3) chemical variations in the ferromanganese crusts, and (4) abundance of volcanogenic-hydrothermal material (vhm) that includes ochrous sediments and magnetite spherules. The vhm suggests its origin by interaction of Fe-rich hydrothermal solutions with surrounding sediments. The CIB spherules occur in sediments of approx. 10 ka and approx. 425 to 650 ka age and are orders of magnitude younger than the 50 to 60 Ma age of the basin. Incidentally, to the north of the basin at ODP Site 717-719 (1 degree S/81 degrees E) hydrothermal precipitates of inorganic calcite and eposition of sulphide minerals (approx. 7.5 to 9 Ma and 0.5 Ma) occur as a result of the on-going intraplate deformation. This paper reviews the above evidences that possibly indicate episodes of localized hydrothermal events in the CIB.

บรรณานุกรม :
Iyer, S.D. . (2548). Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review.
    : National Institute Of Oceanography (NIO), India.
Iyer, S.D. . 2548. "Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review".
    : National Institute Of Oceanography (NIO), India.
Iyer, S.D. . "Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review."
    : National Institute Of Oceanography (NIO), India, 2548. Print.
Iyer, S.D. . Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review. : National Institute Of Oceanography (NIO), India; 2548.