Syneclise


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Syneclise

 

a very gently sloping depression in the earth’s crust within a platform. The structure has irregular roundish or oval contours; diameters range to several hundred km and sometimes exceed 1,000 km. Depths are usually 3 to 5 km. Syneclises are formed over a long period of time (hundreds of millions of years), with comparatively minor changes in contour. Sediments are thicker and geologic columns are more complete at the center of a syneclise than at the periphery, where the columns are characterized by numerous hiatuses in sedimentation. Syneclises often develop over aulakogenes and often consist of separate depressions complicated by arches.

References in periodicals archive ?
In contrast to the magmatic rocks in NE Poland, the Baltic dolerites are situated in the deepest axial part of the Baltic syneclise that does not show any evidence for having undergone relative uplift during the Permo-Carboniferous.
These blocks exist in Gujarat-Kutch, Kerala Konkan, Cauvery, Krishna-Godavari, Deccan Syneclise.
The Paleozoic sea transgression connected the Baltic syneclise with the Moscow basin and the ancient oceans.
Stratigraphy and lithofacies of the Ordovician in the western part of the Peri-Baltic Syneclise.
Currently, the Company is focused on the development of high potential exploration targets in the Krishna Godavari, Cambay and the Deccan Syneclise basin areas.
Tectonic Evolution of the Baltic Syneclise and Local Structures in the South Baltic Region with Respect to their Petroleum Potential.
One of the important areas where these faunas have been discovered is the near-Yenisej zone of the Tunguska syneclise (Krylova et al.
Origin of Ordovician oil shales in the Baltic syneclise, paper 2: kukersites // Lithology and Mineral Resources.
However, the topmost Llandovery Cyrtograptus insectus graptolite Biozone has not been established anywhere in the East Baltic area, not even in the most complete graptolitic sections of the Baltic Syneclise (Paskevicius 1998).
Here, after the regression of the Middle Devonian Baltic basin at the end of Amata time, a transgression of Frasnian age started from the Moscow Syneclise that expanded from shallow epicontinental sea (Nikishin et al.
This hiatus occurs also in eastern Gotland between the Slite and Halla beds (Calner 1999; Calner & Sall 1999), but is lacking in the continuous graptolitic sections of the Baltic Syneclise (Paskevicius et al.