Publication
Heterogeneity of phonolitic pumice deposits from Tenerife, Canary Islands
| dc.contributor.author | Wolff, John A. | |
| dc.date.accessioned | 2018-11-28T13:06:58Z | |
| dc.date.available | 2018-11-28T13:06:58Z | |
| dc.date.issued | 1982-07 | |
| dc.description | International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980. | en |
| dc.description.abstract | The island of Tenerife has an extensive Quaternary phonolitic pyroclastic series, comprising plinian pumice-fall deposits, ignimbrites, and pyroclastic surges. The dominant petrological feature of these pumice deposits is their geochemical and petrographical heterogeneity. Evidence is presented for three causes of heterogeneity: assimilation of roof-rock by the magma, resulting in less evolved compositions of the first erupted pumice; zonation of the magma chamber, causing a change to intermediate compositions among the last products of an eruption; and magma mixing, where mafic and banded tephra are distributed more or less randomly through a particular pumice deposit. | en |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | WOLFF, John A. (1982). Heterogeneity of phonolitic pumice deposits from Tenerife, Canary Islands. "Arquipélago. Série Ciências da Natureza", 3: 231-232. | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.3/4897 | |
| dc.language.iso | eng | pt_PT |
| dc.publisher | Universidade dos Açores | pt_PT |
| dc.subject | Petrology | en |
| dc.subject | Tenerife | en |
| dc.subject | Canary Islands | en |
| dc.title | Heterogeneity of phonolitic pumice deposits from Tenerife, Canary Islands | en |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Ponta Delgada, Açores | pt_PT |
| oaire.citation.endPage | 232 | pt_PT |
| oaire.citation.startPage | 231 | pt_PT |
| oaire.citation.title | Arquipélago. Série Ciências da Natureza | pt_PT |
| oaire.citation.volume | 3 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |