British Antarctic Survey

• SKU: BAS_JAMES_ROSS_IS_13
• This sheet provides an updated geology of the Miocene to Holocene James Ross Island Volcanic Group (JRIVG). The JRIVG is the largest Neogene volcanic field in the Antarctic Peninsula region and extends over 7000 km¬2. It comprises a major shield volcano (Mt Haddington) and numerous monogenetic flank and satellite volcanoes. Eruptions were mainly of two types: lava-fed deltas and tuff cones. The commonest are lava-fed deltas, a type of volcanic formation resembling a sedimentary delta but formed entirely of volcanic rocks. The tuff cones are piles of yellowish pyroclastic rocks (lapilli tuffs) hundreds of metres high that formed during violent explosions mainly in the sea during ice-poor interglacial periods although it is unlikely that James Ross Island was ever completely ice free during the past 6.
• Type: Folded Map
• Subtype: Travel
• Language: English
• Publication Date: 2013-01-01
• Scale: 1:125,000
• Regions Covered: Antarctica
• ISBN: 9780856652042
• Folded Size: N/A
• Unfolded Size: 112.5" (W) x 89" (H)