eprintid: 20645
rev_number: 19
eprint_status: archive
userid: 2437
dir: disk0/00/02/06/45
datestamp: 2016-05-04 09:43:40
lastmod: 2016-05-30 12:47:04
status_changed: 2016-05-04 09:43:40
type: doctoralThesis
metadata_visibility: show
creators_name: Austermann, Gregor
title: Sedimentology and depositional environment of the middle Cambrian Manuels River Formation in the type locality at Conception Bay South, Newfoundland, Canada
subjects: ddc-550
divisions: i-121000
adv_faculty: af-12
keywords: Serie 3
Drumium
Avalonia
Manuels-River-Formation
cterms_swd: Tonmineralogie
cterms_swd: Schwarzschiefer
cterms_swd: Paläogeografie
cterms_swd: Mittelkambrium
cterms_swd: Newfoundland (Insel)
abstract: A detailed bed-by-bed study of fossiliferous, marine, grey to black shales of the middle Cambrian (Drumian, Cambrian Series 3) Manuels River Formation along its type locality in Newfoundland, Canada, was carried out and provides insight into the sedimentology, depositional environment, palaeogeography and climatology of the area. The formation was deposited on the microcontinent Avalonia, the largest terrane of the peri-Gondwanan realm situated in temperate latitudes. The partly organic-rich (up to 3.36 % TOC) shales of the succession were deposited mainly conformably under dysoxic conditions. Deposition was controlled by two shallowing trends and occurred below, near and above mean storm- wave base. The contact of the top of the  rst shallowing-upward trend in the succession is conformably, whereas the second shallowing-upward trend is truncated by an erosional unconformity, forming the top of the formation. An average sedimentation rate of c. 3.8 m/ Ma is estimated. The clay-mineral composition and illite crystallinity suggest a subsidence of approximately 5.7–6.3 km and a burial temperature of c. 280 °C. The low chlorite/kaolinite ratios indicate a mainly warm semi-humid climate setting at 35°–65° S, with sudden changes to a semi-arid setting. The subsidence, sedimentation rate and depositional environment suggest an Early Ordovician Avalonia-Gondwana separation.
date: 2016
id_scheme: DOI
id_number: 10.11588/heidok.00020645
ppn_swb: 165679912X
own_urn: urn:nbn:de:bsz:16-heidok-206458
date_accepted: 2016-04-29
advisor: HASH(0x561a628d7e78)
language: eng
bibsort: AUSTERMANNSEDIMENTOL2016
full_text_status: public
citation:   Austermann, Gregor  (2016) Sedimentology and depositional environment of the middle Cambrian Manuels River Formation in the type locality at Conception Bay South, Newfoundland, Canada.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/20645/1/PhD_Austermann_2016_final_PDFA.pdf