1-19 OF 19 RESULTS FOR

MDICE

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Published: 22 February 2016
Geological Magazine (2017) 154 (2): 334-353.
...RONGCHANG WU; MIKAEL CALNER; OLIVER LEHNERT Abstract One of the few and most complete records of the MDICE (Middle Darriwilian Isotope Carbon Excursion) is herein documented from Baltoscandia. Based on a core section penetrating the condensed Lower–Middle Ordovician succession (~46 m) on the island...
FIGURES | View All (11)
Journal Article
Published: 01 March 2010
Journal of the Geological Society (2010) 167 (2): 249-259.
...Birger Schmitz; Stig M. Bergström; Wang Xiaofeng Abstract: The middle Darriwilian δ 13 C excursion (MDICE), one of the least known of the Ordovician δ 13 C excursions, has previously been recorded only from the Middle Ordovician of Baltoscandia. Analysis of many recently collected limestone samples...
FIGURES | View All (9)
Image
The δ 13 C curve through the Darriwilian Guniutan Formation at the Maocaopu...
Published: 01 March 2010
of the MDICE, the peak values of which are in the upper half of this subzone. The MDICE is cut off by the unconformity at the top of the Guniutan Formation (shown by a wavy line), where there is a significant stratigraphic gap corresponding to the Eoplacognathus suecicus and Pygodus serra zones. The close
Image
High-resolution δ 13 C chemostratigraphy of the Ordovician succession in
  ...
Published: 22 February 2016
Figure 8. High-resolution δ 13 C chemostratigraphy of the Ordovician succession in the Tingskullen drill core from Öland, southeastern Sweden. The Middle Darriwilian Isotope Carbon Excursion (MDICE) is exceptionally well preserved, showing a rising
Image
Comparison of the δ 13 C records from the Tingskullen core (this study),
  ...
Published: 22 February 2016
in the δ 13 C record from the Tingskullen core refer to the rising limb, the peak interval and the falling limb of the MDICE, respectively. Note the very high condensation of strata in the Tingskullen core, as indicated by scale bars.
Image
Correlations for the Cambrian part of the Subaiyingou (SBG) carbon isotope ...
Published: 01 September 2015
is shown with green boxes, and the correlation for the Ordovician is shown with orange boxes. The middle Darriwilian carbon isotopic excursion (MDICE) is shown on the right. Old subdivisions of the Cambrian: m—Middle, u—Upper.
Image
Diagram showing the application of the isotope zones of  Ainsaar  et al . (...
Published: 01 March 2010
as in China. It should be noted that, because of a prominent stratigraphic gap, the entire top half of Isotope Zone 3 (MDICE) is missing in the Maocaopu section, and much, if not all, of this interval is not present also in the Puxi River section.
Image
Comparison of the δ 13 C records from the Tingskullen core (this study),
  ...
Published: 22 February 2016
of the MDICE, respectively.
Image
The δ 13 C curve through the Darriwilian Guniutan Formation at the Puxi Riv...
Published: 01 March 2010
the Yangtzeplacognathus crassus Zone and lower Microzarkodina hagetiana Subzone are similar to those in the coeval interval in the Maocaopu succession, as is also the appearance of the gradually elevated δ 13 C values of the MDICE in the uppermost Microzarkodina hagetiana and the Microzarkodina ozarkodella
Image
The δ 13 C curve through the Darriwilian succession in the Mehikoorma (421)...
Published: 01 March 2010
, the Lenodus variabilis and Eoplacognathus crassus zones have not yet been recognized. The marked increase in δ 13 C values in the Microzarkodina ozarkodella Subzone that indicates the beginning of the MDICE should be noted. Baseline δ 13 C values do not return until near the end of the Darriwilian Stage
Image
The δ 13 C curve through the Darriwilian succession at the Hällekis Quarry,...
Published: 01 March 2010
Limestone and Holen Limestone is after Zhang (1998 a ) and that of the Gullhögen Formation is after Jaanussson (1964 ) based on the nearby Norra Skagen drill-core. The increase in δ 13 C values in the Microzarkodina ozarkodella Subzone that marks the beginning of the MDICE should be noted
Image
Biostratigraphically based diagram showing how the stratigraphically seemin...
Published: 01 March 2010
is to illustrate the similarity in the δ 13 C curves, the vertical scale is not the same in the four successions, as is also the case in Figure 9 . Stratigraphic gaps indicated by conodont biostratigraphy are shown by vertical ruling. The absence of the upper portion of the MDICE in the Hällekis Quarry
Journal Article
Journal: GSA Bulletin
Published: 01 November 2014
GSA Bulletin (2014) 126 (11-12): 1551-1568.
FIGURES | View All (12)
Journal Article
Published: 01 September 2013
Journal of the Geological Society (2013) 170 (5): 707-710.
... Ordovician stable C carb isotope record has generally lower amplitude fluctuations ( Fig. 1 ). A Darriwilian (Mid-Ordovician) positive δ 13 C carb excursion in Baltoscandia (<+2‰; MDICE; Ainsaar et al. 2010 ) correlates with widespread hiatus, sea-level fall, and facies change to limestone deposition...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 September 2015
GSA Bulletin (2015) 127 (9-10): 1174-1193.
... is shown with green boxes, and the correlation for the Ordovician is shown with orange boxes. The middle Darriwilian carbon isotopic excursion (MDICE) is shown on the right. Old subdivisions of the Cambrian: m—Middle, u—Upper. ...
FIGURES | View All (16)
Journal Article
Published: 29 January 2015
Geological Magazine (2015) 152 (5): 813-829.
FIGURES | View All (11)
Journal Article
Published: 07 June 2013
Geological Magazine (2014) 151 (2): 349-364.
... isotope deflections in the middle Darriwilian (MDICE) and Aeronian (Ae1) overlap times of high species richness. In the Tremadocian (Tr2, R. manitouensis zone) a small but sharp positive carbon isotopic event aligns with increasing graptoloid species richness (Buggisch et...
FIGURES | View All (5)
Journal Article
Published: 13 September 2016
Geological Magazine (2018) 155 (1): 59-84.
FIGURES | View All (13)
Series: GSA Field Guide
Published: 01 January 2011
DOI: 10.1130/2011.0024(12)
EISBN: 9780813756240
.... Organic-rich subtidal carbonates and shales of the Dutchtown Formation and age-equivalent brown shales and organic-rich sandstones of the upper St. Peter indicate increased organic-carbon burial that may equate with the Middle Darriwilian positive carbon-isotope excursion (MDICE). This succession...
FIGURES | View All (20)