The Circum-Hellas Province

David A. Crown, James R. Zimbelman, David A. Williams

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The Circum-Hellas Volcanic Province includes two large expanses of ridged plains that each include distinct eruptive centers: Hadriacus and Tyrrhenus Montes are located northeast of Hellas in Hesperia Planum, and Amphitrites, Malea, Peneus, and Pityusa Paterae are found in Malea Planum to the south. These volcanoes show low relief forms and degraded surfaces and represent the oldest class of volcanoes on Mars. Hadriacus and Tyrrhenus Montes, the best imaged of the highland paterae, are attributed to layered pyroclastic flow deposits dissected by fluvial erosion and/or groundwater sapping. Amphitrites Patera exhibits similar surface morphology, but Malea, Peneus, and Pityusa Paterae show caldera-like depression without related edifices. Ages of volcanic features in the Circum-Hellas Volcanic Province are commonly Late Noachian or Early Hesperian, but volcanism associated with Tyrrhenus Mons extends into the Late Hesperian/Early Amazonian with emplacement of a large flow field to the southwest along the regional slope toward Hellas.

Original languageEnglish (US)
Title of host publicationThe Volcanoes of Mars
PublisherElsevier
Pages92-120
Number of pages29
ISBN (Electronic)9780128228760
DOIs
StatePublished - Jan 1 2020
Externally publishedYes

Keywords

  • Amphitrites patera
  • Hadriacus mons
  • Hesperia planum
  • Hydrovolcanism
  • Malea patera
  • Malea planum
  • Peneus patera
  • Pityusa patera
  • Pyroclastic flow
  • Tyrrhenus mons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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