Mount Prindle
Encyclopedia
Prindle Volcano is an isolated basaltic cinder cone
located in eastern Alaska
, United States
, in the headwaters of the East Fork of the Fortymile River
. The cone is fresh-looking and has a base approximately 900 meters wide. It is the northwesternmost expression of the Northern Cordilleran Volcanic Province
. The cinder cone, and an approximately 11 km-long lava flow which breached the margin of the cone, erupted in the Pleistocene
approximately 176,000 years ago. Rocks forming the Prindle Volcano occur within, and penetrated through, the Yukon-Tanana upland
which is a large region of mostly Paleozoic-Mesozoic metamorphosed and deformed sedimentary, volcanic, and intrusive rocks that are intruded by younger Cretaceous and Tertiary granitic rocks. Xenoliths contained in the volcano's ejecta provide a sample of lower crust material.
Cinder cone
According to the , Cinder Cone is the proper name of 1 cinder cone in Canada and 7 cinder cones in the United States:In Canada: Cinder Cone In the United States:...
located in eastern Alaska
Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
, in the headwaters of the East Fork of the Fortymile River
Fortymile River
The Fortymile River is a river in Alaska and the Yukon. Prior to the Klondike Gold Rush, there was considerable mining activity along this tributary of the Yukon River. In the 1970s, there was an asbestos mine at Clinton Creek in the Yukon. When gold was discovered on the Fortymille River in 1886,...
. The cone is fresh-looking and has a base approximately 900 meters wide. It is the northwesternmost expression of the Northern Cordilleran Volcanic Province
Northern Cordilleran volcanic province
The Northern Cordilleran Volcanic Province , formerly known as the Stikine Volcanic Belt, is a geologic province defined by the occurrence of Miocene to Holocene volcanoes in the Pacific Northwest of North America...
. The cinder cone, and an approximately 11 km-long lava flow which breached the margin of the cone, erupted in the Pleistocene
Pleistocene
The Pleistocene is the epoch from 2,588,000 to 11,700 years BP that spans the world's recent period of repeated glaciations. The name pleistocene is derived from the Greek and ....
approximately 176,000 years ago. Rocks forming the Prindle Volcano occur within, and penetrated through, the Yukon-Tanana upland
Yukon-Tanana Terrane
The Yukon-Tanana Terrane is a tectonic terrane that extends from central Alaska through central Yukon and into northern British Columbia, Canada and Southeast Alaska, USA. Extending over 2000 km, the YTT is the largest tectonostratigraphic terrane in the northern North American Cordillera...
which is a large region of mostly Paleozoic-Mesozoic metamorphosed and deformed sedimentary, volcanic, and intrusive rocks that are intruded by younger Cretaceous and Tertiary granitic rocks. Xenoliths contained in the volcano's ejecta provide a sample of lower crust material.