The duration of periods of non-deposition remains mostly beyond biostratigraphic
resolution, but at least some gaps can be traced by quantitative microfossil data, as shown by Tammekand et al.
However, there has not been a tradition of comparing the Spanish and Portuguese faunal and stratigraphic settings, in order to set up an integrated biostratigraphic
model with obvious implications on further palaeogeographic interpretations.
Based on the detailed biostratigraphic
studies (100 thin sections), 13 age diagnostic species of larger foraminifers are recorded.
Although a satisfactory age-depth model was developed with the help of known ages of biostratigraphic
boundaries for Lake Kuranovas (Fig.
It is important to remark that only those important biostratigraphic
conodonts around the nothoperbonus Zone are discussed (briefly) and/or illustrated (Figs.
Data on the magnetic susceptibility and natural gamma radiation of sediments (in cooperation with IGCP 580) will be used as auxiliary means for high-resolution correlation of biostratigraphic
well-documented units belonging to different bathymetric sequences within the tropical belt (Laurussia, Siberia, peri-Gondwana and N- Gondwana).
This unit corresponds to the lower carbonate unit of the Muschelkalk facies, dated as late Anisian by biostratigraphic
studies (See Marzo, 1980; Calvet and Marzo, 1994; Marquez-Aliaga et al.
It comprises over 1,300 new geochemical, biostratigraphic
and sedimentological analyses of over 800 individual outcrop, well, corehole and seep samples collected from Jamaica.
With headquarters and a dedicated laboratory in Conwy and satellite offices in St Albans and Houston, USA, the company has 50 employees and specialises in the provision of high-resolution, quantitative reservoir scale studies and wellsite (real-time) biostratigraphic
A geologic and biostratigraphic
framework for Miocene sediments near Khaur village, Northern Pakistan.
The Waagen's biostratigraphic
subdivisions (1895) as modified by Kummel and Tei cherrt Team was adoped by all subsequent researchers.
dating of rocks and various geological--geochemical events is an important but also complicated task when dates received from different fossil groups are not in good harmony.