Results 21 to 30 of about 3,102 (219)
Towards a revised Sandbian conodont biozonation of Baltica [PDF]
One of the key objectives of the studies proposed by the Ordovician Subcommission is the improvement of regional stratigraphy for further advancements in global correlation.
Tõnn Paiste +3 more
doaj +1 more source
The Evae transgression: a major event? [PDF]
The most extensive sea-level event of the Early Ordovician is known as the Evae transgression. During the highstand of this event, the conodont index species Oepikodus evae reached its acme and often coincided with the peak in conodont generic diversity.
Gisella M. Della Costa +1 more
doaj +1 more source
Upper Ordovician chronostratigraphic correlation between the Appalachian and Midcontinent basins [PDF]
Study of a subsurface core (named F688) from northern Indiana provides integrated data sets linking Katian chronostratigraphic records of the Appalachian and Midcontinent basins.
Cristiana J. P. Esteves +7 more
doaj +1 more source
EVIDENCE OF A GUADALUPIAN AGE FOR THE KHUFF FORMATION OF SOUTHEASTERN OMAN: PRELIMINARY REPORT
The Guadalupian succession of the Huqf area (Sultanate of Oman) represents a mega-sequence comprising the fluvial terrigenous Gharif Formation and the overlying marine Khuff Formation. The Khuff Fm.
LUCIA ANGIOLINI +10 more
doaj +1 more source
UPPER DEVONIAN-LOWER CARBONIFEROUS CONODONTS FROM CHIANG DAO CHERTS, NORTHERN THAILAND
In Northern Thailand, radiolarites (radiolarian cherts) are very common and their study provides an important tool to understand the regional geology and moreover to localise the suture zone(s).
CARINE RANDON +4 more
doaj +1 more source
Upper Sandbian–lower Katian bio- and chemostratigraphy in the Pajevonys-13 core section, Lithuania [PDF]
The succession of five formations (Auleliai, Vilučiai, Alvitas, Šakiai, Jakšiai) corresponding to the upper Sandbian and lower Katian in southern Lithuania is dated based on new bio- and chemostratigraphical data from the Pajevonys-13 core section.
Linda Hints +4 more
doaj +1 more source
In order to study the fossil contents of the Ruteh Formation for biostratigraphical purposes, the 200 meters thick section was sampled at Harijan section, Central Alborz. The sequence is mainly made up of limestone and shale's.
Meysam Shafiee Ardestani +4 more
core +1 more source
Currently, the techniques applied for extraction and study of conodonts from siliceous rocks are associated with a number of problems. This makes it difficult to solve many problems in the areas of development of the volcanic and volcanic-sedimentary ...
A. M. Fazliakhmetov +3 more
doaj +1 more source
CONODONT DISTRIBUTION ACROSS THE MID-CARBONIFEROUS BOUNDARY IN THECENTRAL TAURIDES, TURKEY
The Mid-Carboniferous boundary in the Aladað Unit of the Central Taurides, previously delineated on the basis of foraminifers, is now further recognizable on the basis of conodonts.
AYSE ATAKUL-ÖZDEMIR +2 more
doaj +1 more source
FIRST RECORD OF ORDOVICIAN CONODONTS FROM SOUTHWESTERN SARDINIA
A first illustration of Ordovician conodonts from Sardinia is briefly given. The assemblage, belonging to the HDS biofacies, indicates an early-middle Ashgillian age.
ANNALISA FERRETTI, ENRICO SERPAGLI
doaj +1 more source

