Unknown
Mazarovich, Alexander O
;
Simonov, Vladimir A
;
Peive, Aleksandr V
;
[et al.]
Kovyazin, S V
;
Tret'yakov, G A
;
Raznitsin, Yury N
;
Savel'eva, G N
;
Skolotnev, Sergey G
;
Sokolov, S Yu
;
Turko, Natalia N
PANGAEA
In:
Supplement to: Mazarovich, Alexander O; Simonov, Vladimir A; Peive, Aleksandr V; Kovyazin, S V; Tret'yakov, G A; Raznitsin, Yury N; Savel'eva, G N; Skolotnev, Sergey G; Sokolov, S Yu; Turko, Natalia N (2001): Hydrothermal mineralization in the Sierra Leone Fracture Zone (Central Atlantic Ocean). Translated from Litologiya i Poleznye Iskopaemye, 2001, 5, 526-533, Lithology and Mineral Resources, 36(5), 460-466, https://doi.org/10.1023/A:1012346615426
Publication Date:
2023-05-12
Description:
An analysis of data on the location of hydrothermal fields, seismicity, and satellite altimetry evidences that in mid-ocean ridges with low spreading rate hydrothermal fields tend to be grouped in areas with generally low seismic activity and at intersections of discontinuities and rift zones. Based on this assumption, the Sierra Leone Fracture Zone was studied in 2000 during Cruise 22 of R/V Akademik Nikolaj Strakhov. A study of gabbrodolerite and dolerite showed that sulfide ore minerals in them were formed both by hydrothermal and magmatic processes. An analysis of melt inclusions demonstrated that magmatic complexes formed from a high-temperature (1210-1255°C) low-potassium melt of the N-MORB type. Investigations of fluid inclusions revealed that gabbro and dolerite formed under influence of an active hydrothermal system at temperature 205-226°C. Thus, the Sierra Leone Fracture Zone is considered to be perspective for a discovery of a new hydrothermal field.
Keywords:
Akademik Nikolaj Strakhov; ANS22; Archive of Ocean Data; ARCOD; Calculated; CAMEBAX microprobe; Cobalt; Copper; Dredge; DRG; Iron; Lead; Mid-Atlantic Ridge; Minerals; Nickel; S2234; Sample code/label; Sulfur, total; Sum; Zinc
Type:
Dataset
Format:
text/tab-separated-values, 160 data points
Permalink
|
Location |
Call Number |
Expected |
Availability |
