Kaufman, "COCORP profiling across the southern Oklahoma Aulacogen
: overthrusting of the Wichita Mountains and compression within the Anadarko basin," Geology, vol.
On the genesis of the lead-zinc deposits in Nigerians Benue rift (aulacogen
) a re-interpretation.
In a larger-scale context, the Baltic dolerites and the alkaline rocks of northeastern Poland were preceded by magmatic activity in the Pripyat palaeorift in southern Belarus which represents the northwestern continuation of the Dnieper-Donetsk Aulacogen
The study area lies at the transition zone between the Arkoma Basin and the Ouachita orogenic belt and could also be associated with northwest trending faults associated with the southern Oklahoma aulacogen
The basin fill thickens to the northeast, into the Oklahoma aulacogen
, and thins to the south and west, toward the Llano uplift and the Bend arch, respectively The Barnett Shale also thins to the west over the Bend arch where it interfingers with the Chappel Formation [14-17].
However, if they represent an aulacogen
(Failed-arm) type swarm (Fig.
Evolution of Nigeria's Benue Trough (Aulacogen
): A tectonic model: Geological magazine 112(6): 93-103.
Anomalies associated with Proterozoic structures include thicker crust (53 km) beneath the Kapuskasing uplift, a Paleoproterozoic intracratonic thrust (e.g., Percival, 1994), and thinner crust (35 km) beneath the Nipigon plate, a Mesoproterozoic aulacogen
developed on Superior Province basement.
The New Madrid fault zone is thought to be an aulacogen
- the failed arm of a plate tectonic rift system.
Evolution of the Nigeria's Benue Trough (aulacogen
): a tectonic model.
Tectono-sedimentological evolution of an elongate intracratonic basin (Aulacogen
): The case of the Benue Trough of Nigeria.
Thus, the negative DLFI zone outlined at the upper Amazon river aulacogen
may also infer a prospective sedimentary basin for oil and gas exploration.