Hanging-wall colluvial cementation along active normal faults
Hanging-wall colluvial cementation along active normal faults
复制标题
沿活动正断层的上盘崩积胶结作用
DOI:
10.1017/qua.2017.32
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发表时间:
2017
影响因子:
2.3
通讯作者:
Reicherter
中科院分区:
文献类型:
--
作者:
Schneiderwind;Pallikarakis;Mechernich;Papanikoloau;Reicherter
Many active normal faults throughout the Aegean juxtapose footwall limestone against hanging-wall colluvium. In places, this colluvium becomes cemented and forms large hanging-wall lobes or sheets of varying thickness attached to the bedrock fault. Investigations at the Lastros Fault in eastern Crete allow us to define criteria to distinguish between cemented colluvium and fault cataclasite (tectonic breccia), which is often present at bedrock faults. Macro- and microscopic descriptions of the cemented colluvium show that the colluvium was originally deposited through both rockfalls and debris flows. Stable isotope analyses of oxygen and carbon from 83 samples indicate that cementation then occurred through meteoric fluid flow in the fault zone from springs at localised positions along strike. Palaeotemperature calculations of the parent water from which the calcite cement precipitated are indicative of a climate between 7°C and 10°C colder than Crete’s present average annual temperature. This most likely represents the transition between a glacial and interglacial period in the late Pleistocene. Ground-penetrating radar also indicates that cemented colluvium is present in the hanging-wall subsurface below uncemented colluvium. Using these results, a model for the temporal development of the fault and formation of the cemented colluvium is proposed.
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影响因子:
2.9
作者:
L. Jolivet;C. Faccenna;B. Huet;L. Labrousse;L. Pourhiet;O. Lacombe;E. Lecomte;E. Burov;Y. Denèle
通讯作者:
L. Jolivet;C. Faccenna;B. Huet;L. Labrousse;L. Pourhiet;O. Lacombe;E. Lecomte;E. Burov;Y. Denèle
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
I. Stewart;P. Hancock
通讯作者:
P. Hancock
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
A. Pentecost
通讯作者:
A. Pentecost
影响因子:
5.3
作者:
Gallen, S. F.;Wegmann, K. W.;Fassoulas, C.
通讯作者:
Fassoulas, C.
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Gandin;E. Capezzuoli
通讯作者:
E. Capezzuoli