View allAll Photos Tagged fault
A large boulder near Green Lake SE of South Lake in the Bishop Creek Canyon NW of Bishop, Ca
Ted & Paula Williams, Bishop, Ca.
Er Lake, (洱海), is an alpine fault lake in Yunnan province, China. Its name means "Ear-shaped Sea", due to its shape as seen by locals and travellers.Erhai is situated at 1,972 m above sea level. In size, the North-South length of the lake is 40 km and the East-West width is roughly 7-8 km. Its area is 250 km², making it the second largest highland lake of China, after Dianchi Lake. Its circumference reaches 116 km, its average depth is of 11 m and the total storage capacity of 2.5 billion m³.
The lake is sandwiched between the Cangshan Mountains to the West and Dali City. It starts at Dengchuan at its northern extremity and finishes at Xiaguan city in the South, receiving water from the Miju and Mici Rivers (in the North), the Bolou River (in the East) and smallers streams from the Cangshan Mountains. Yangbi River is the lake's outlet in the South and eventually flows into the Lancang River (Mekong River).
Hollister, California
In the San Francisco Bay area there are three major faults, from west to east the San Andreas, the Hayward, and the Calaveras; all are part of the San Andreas fault system. All of these are "right-lateral strike-slip faults," which means that the motion is predominantly horizontal, with the land on the west side of the fault moving north.
South of the Bay Area the Hayward and Calaveras merge into the San Andreas. Hollister is located just north of where this happens, right on top of the southern end of the Calaveras fault.
What makes Hollister particularly interesting is that from San Juan Bautista to just north of Parkfield the faults in the San Andreas system are not "stuck": instead of moving only during major earthquakes, they continuously "creep." As a result of this creep, Hollister is being slowly ripped in two, for the most part along a remarkably narrow zone running right through the middle of town.
The rate of creep is inconsistent, and has been measured at between 6 and 15mm per year at various times throughout the 20th century. Underground pipes, road paving, curbing, and foundations all show signs of being gradually shifted apart. Notice how the distortion always bends structures to the right- no matter from which side of the fault the photo was taken. Also notice that the motion is horizontal: the ground is remaining level as it moves. Together, these two observations define right-lateral strike-slip motion.
Faulted sea stack north of Latheronwheel. Dark rock indicates hydrothermal activity during the Devonian.
This unit is not working due to an electricity supply fault. It has been reported to the local electricity supply company for repair.