Organic block coatings in block-and-ash flow deposits at Merapi Volcano, central Java

  title={Organic block coatings in block-and-ash flow deposits at Merapi Volcano, central Java},
  author={Eleanor Donoghue and Valentin R. Troll and Lothar M. Schwarzkopf and Geoff Clayton and Robbie Goodhue},
  journal={Geological Magazine},
  pages={113 - 120}
Abstract The 1954, 1994, 1998 and 2006 block-and-ash flow deposits from Merapi volcano, Indonesia, contain andesite blocks that display localized, dark surface coatings. These coated blocks are typically found in clusters, but may also occur isolated within the block-and-ash flow deposits. The coatings form irregular patches (tens of centimetres across) on block surfaces, and are characterized by a silver, metallic appearance. The origin and composition of the coatings have not previously been… Expand
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Magma-carbonate interaction processes and associated CO2 release at Merapi volcano, Indonesia: insights from experimental petrology
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Abstract. Surfaces of meter-sized blocks in the 1998 block-and-ash flow deposits of Merapi volcano are partially covered by centimeter-sized, randomly orientated impact marks, which consist of anExpand
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Friction marks on blocks from pyroclastic flows at the Soufriere Hills volcano, Montserrat: Implications for flow mechanisms: Comment
We congratulate [Grunewald et al. (2000)][1] on their very detailed study of pseudotachylite-bearing friction marks on andesitic blocks from block-and-ash flow deposits of Soufriere Hills volcano,Expand
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Historical eruptions of Merapi Volcano, Central Java, Indonesia, 1768-1998
Abstract Information on Merapi eruptive activity is scattered and much is remotely located. A concise and well-documented summary of this activity has been long needed to assist researchers andExpand