Clay Minerals in Sediments from Contact Zones with Basalt Sills
- Авторлар: Kurnosov V.1, Sakharov B.1, Geptner A.1, Konovalov Y.1, Goncharov E.1
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Мекемелер:
- Geological Institute, Russian Academy of Sciences
- Шығарылым: Том 54, № 3 (2019)
- Беттер: 221-235
- Бөлім: Article
- URL: https://journals.rcsi.science/0024-4902/article/view/162800
- DOI: https://doi.org/10.1134/S0024490219030052
- ID: 162800
Дәйексөз келтіру
Аннотация
Clay minerals (fraction <0.001 mm) of Upper Pleistocene clayey–sandy–silty sediments recovered by DSDP Holes 481 and 481A in the Northern Trough, Guaymas Basin, Gulf of California, were studied by X-ray methods based on the modeling of diffraction patterns and their comparison with experimental diffractograms. Terrigenous clay minerals are represented mainly by dioctahedral micaceous varieties (mixed-layer disordered illite–smectites, illite) with the chlorite admixture and by kaolinite in the upper section of unaltered sediments. Intrusion of hot basalt sills (total thickness of the complex is about 27 m) provoked alterations in the phase composition of clay minerals in sediments (7.5 m thick) overlying the sill complex. These sediments include newly formed trioctahedral layered silicates (mixed-layer chlorite–smectites, smectite). Sediments inside the sill complex include trioctahedral mixed-layer mica–smectite–vermiculite or trioctahedral smectite. The trioctahedral mixed-layer chlorite–smectite coexisting with smectite was found in a single sample of the same complex.
Авторлар туралы
V. Kurnosov
Geological Institute, Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: vic-kurnosov@rambler.ru
Ресей, Pyzhevskii per. 7, Moscow, 119017
B. Sakharov
Geological Institute, Russian Academy of Sciences
Email: vic-kurnosov@rambler.ru
Ресей, Pyzhevskii per. 7, Moscow, 119017
A. Geptner
Geological Institute, Russian Academy of Sciences
Email: vic-kurnosov@rambler.ru
Ресей, Pyzhevskii per. 7, Moscow, 119017
Yu. Konovalov
Geological Institute, Russian Academy of Sciences
Email: vic-kurnosov@rambler.ru
Ресей, Pyzhevskii per. 7, Moscow, 119017
E. Goncharov
Geological Institute, Russian Academy of Sciences
Email: vic-kurnosov@rambler.ru
Ресей, Pyzhevskii per. 7, Moscow, 119017