SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Paul Nigel)
 

Sökning: WFRF:(Paul Nigel) > Integrated chronost...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003244nam a2200385 4500
001oai:DiVA.org:uu-405194
003SwePub
008200226| | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4051942 URI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a vet2 swepub-contenttype
072 7a ovr2 swepub-publicationtype
1001 a Betts, Marissa J4 aut
2451 0a Integrated chronostratigraphy of the lower Cambrian Byrd Group, Transantarctic Mountains
338 a print2 rdacarrier
520 a Antarctica and Australia were sutured together straddling the equator during the major pulse of animal biodiversification associated with the Cambrian radiation. However, lack of detailed systematic sampling of lower Cambrian sedimentary packages from Antarctica has significantly impeded precise age determination and correlation with other Cambrian paleocontinents, especially with other parts of East Gondwana. Here were present new, integrated biostratigraphic and chemostratigraphic (δ13C isotopes) data from three stratigraphic sections measured through autochthonous shallow water carbonates (including archaeocyath-microbial bioherms) from the lower Cambrian Byrd Group in the Transantarctic Mountains. Recovered shelly fossil assemblages (brachiopods, tommotiids, molluscs, trilobites) from the Holyoake and Churchill Ranges include conspecific taxa previously described from Hawker Group rocks in the Arrowie Basin of South Australia facilitating direct correlation with the upper Dailyatia odyssei biozone. Synchronous chemostratigraphic data capture a distinctive positive ?13C excursion in the Churchill Range interpreted as the global Mingxinsi Carbon Isotope Excursion (MICE) peak. A succeeding gradual negative ?13C excursion captured in the Churchill and Holyoake sections is interpreted as the global Archaeocyathid Extinction Carbon Isotope Excursion (AECE) event. There is no chemostratigraphic evidence for the large Redlichiid-Olenellid Extinction Carbon Isotope Excursion (ROECE) negative event that straddles and defines the Cambrian Stage 4 – Miaolingian boundary. Hence, the integrated faunal and new chemostratigraphic data presented herein strongly support a Cambrian Stage 4 age for the upper Shackleton Limestone – Holyoake Formation – Starshot Formation succession of the Byrd Group.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Annan geovetenskap och miljövetenskap0 (SwePub)105992 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Other Earth and Related Environmental Sciences0 (SwePub)105992 hsv//eng
653 a Cambrian Series 2
653 a East Antarctica
653 a Biostratigraphy
653 a Chemostratigraphy
653 a Carbon Isotopes
7001 a Claybourn, Thomas M4 aut
7001 a Holmer, Lars E4 aut
7001 a Skovsted, Christian B4 aut
7001 a Myrow, Paul M4 aut
7001 a Stemmerik, Lars4 aut
7001 a Topper, Timothy P4 aut
7001 a Park, Tae-Yoon4 aut
7001 a Hughes, Nigel C4 aut
7001 a Brock, Glenn A4 aut
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-405194

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy