Armutlu Peninsula density in the mountains at the inner peninsula is low, where there are only small villages. Both gulfs at the north and the south are actually on two active tectonic fault lines. The entire peninsula was hit by the İzmit earthquake on August 17, 1999 that occurred along the western portion of the North Anatolian Fault Zone. Armutlu Peninsula Armutlu Peninsula () is a peninsula extending westward into Marmara Sea in the Anatolian section of Turkey. In addition to Yalova Province, parts of Kocaeli Province and Bursa Province are on the peninsula. Armutlu Peninsula is between Gulf of Izmit in
Geology of the Antarctic Peninsula and was active on King George Island during most of the Tertiary. The younger system of faults, also a series of strike-slip faults, displaced the older system and formed transverse to the island arc. Movement of the fault activity was caused by the counterclockwise rotation of the Antarctic Continent with respect to the subduction zone. The last and most recent stage in the evolution of the Antarctic Peninsula subduction zone is the opening of the Bransfield Rift, creating the Bransfield back-arc basin from the Oligocene to the present day. This basin separates the inner, older magmatic arc (mainland Antarctic Peninsula)