Universität zu Köln

Mason, Jack, Schneiderwind, Sascha, Pallikarakis, Aggelos, Mechernich, Silke ORCID: 0000-0003-3684-040X, Papanikolaou, Ioannis ORCID: 0000-0002-3576-3636 and Reicherter, Klaus (2017). Hanging-wall colluvial cementation along active normal faults. Quat. Res., 88 (1). S. 39 - 60. NEW YORK: CAMBRIDGE UNIV PRESS. ISSN 1096-0287

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Abstract

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 degrees C and 10 degrees 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mason, Jack UNSPECIFIED UNSPECIFIED UNSPECIFIED Schneiderwind, Sascha UNSPECIFIED UNSPECIFIED UNSPECIFIED Pallikarakis, Aggelos UNSPECIFIED UNSPECIFIED UNSPECIFIED Mechernich, Silke UNSPECIFIED orcid.org/0000-0003-3684-040X UNSPECIFIED Papanikolaou, Ioannis UNSPECIFIED orcid.org/0000-0002-3576-3636 UNSPECIFIED Reicherter, Klaus UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-225805
DOI:	10.1017/qua.2017.32
Journal or Publication Title:	Quat. Res.
Volume:	88
Number:	1
Page Range:	S. 39 - 60
Date:	2017
Publisher:	CAMBRIDGE UNIV PRESS
Place of Publication:	NEW YORK
ISSN:	1096-0287
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DEPOSITIONAL PROCESSES; ISOTOPIC COMPOSITION; STAINING TECHNIQUE; DEFORMATION RATES; STABLE-ISOTOPES; AEGEAN REGION; CRETE GREECE; ZONE; INDICATORS; CARBONATES Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22580