The Flood Range () is an

Antarctic The Antarctic ( or , American English also or ; commonly ) is a polar region around Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica, the Kerguelen Plateau and other ...

range Range may refer to: Geography * Range (geographic), a chain of hills or mountains; a somewhat linear, complex mountainous or hilly area (cordillera, sierra) ** Mountain range, a group of mountains bordered by lowlands * Range, a term used to i ...

of large snow-covered

mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and ...

s extending in an E-W direction for about 96 km (60 mi) and forming a right angle with the southern end of the

Ames Range The Ames Range is an Antarctic range of snow-covered, flat-topped, steep-sided mountains, extending in a N-S direction for 32 km (20 mi) and forming a right angle with the eastern end of the Flood Range in Marie Byrd Land. They were disc ...

Marie Byrd Land Marie Byrd Land (MBL) is an unclaimed region of Antarctica. With an area of , it is the largest unclaimed territory on Earth. It was named after the wife of American naval officer Richard E. Byrd, who explored the region in the early 20th centur ...

. Discovered by the

Byrd Byrd commonly refers to: * William Byrd (c. 1540 – 1623), an English composer of the Renaissance * Richard E. Byrd (1888–1957), an American naval officer and explorer Byrd or Byrds may also refer to: Other people * Byrd (surname), includin ...

Antarctic Expedition in 1934 from a great distance. Reconnaissance flights by the USAS (1939–41) explored the range. The principle mountain was named "Mount Hal Flood" by Byrd for his uncle, the Hon.

Henry D. Flood Henry De La Warr Flood (September 2, 1865 – December 8, 1921) was a representative from the Commonwealth of Virginia to the United States House of Representatives, brother of U.S. Representative Joel West Flood and uncle of U.S. Senator Harr ...

, U.S. Representative from Virginia. The name was subsequently transferred by US-SCAN from the mountain to the entire range. Mount Hal Flood is now known officially as

Mount Berlin Mount Berlin is a high glacier-covered volcano in Marie Byrd Land, Antarctica, from the Amundsen Sea. It is a mountain with parasitic vents that consists of two coalesced volcanoes; Berlin proper with the wide Berlin Crater and Merrem P ...

. Other mountains in this range include

Mount Moulton Mount Moulton is a complex of ice-covered shield volcanoes, standing east of Mount Berlin in the Flood Range, Marie Byrd Land, Antarctica. It is named for Richard S. Moulton, chief dog driver at West Base. The volcano is of Pliocene age and is ...

and

Mount Bursey Mount Bursey is a broad, ice-covered mountain, high, which forms the eastern end of the Flood Range in Marie Byrd Land, Antarctica. It was discovered by members of the United States Antarctic Service (USAS) on aerial flights in 1940, and named ...

. The Flood Range consists of a linear volcanic chain of peaks in which there have been systematic migrations of

felsic In geology, felsic is a modifier describing igneous rocks that are relatively rich in elements that form feldspar and quartz.Marshak, Stephen, 2009, ''Essentials of Geology,'' W. W. Norton & Company, 3rd ed. It is contrasted with mafic rocks, whi ...

activity. This activity has moved 90 km from east to west between 9 million and 2.5 million years ago, and 154 km northward from the south end of the Ames Range toward

Shepard Island Shepard Island or John Shepard Island is an island about long, lying west of Grant Island off the coast of Marie Byrd Land, Antarctica. Shepard Island is ice capped except at its northern, seaward side, and is almost wholly embedded in the G ...

between 12.7 and 0.6 million years ago.

Sources

* Volcanoes of Marie Byrd Land Miocene shield volcanoes Pliocene shield volcanoes Pleistocene shield volcanoes {{MarieByrdLand-geo-stub