https://ascension-island-volcanology.com/related-links-and-further-reading/publications/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/publicationspg1.pngpublicationspghttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/publicationspg.pngpublicationspghttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_4-lavaletter1.png2015_4 lavaLetter2021-10-08T07:48:33+00:00weekly0.6https://ascension-island-volcanology.com/people/rebecca-winstanley/https://ascension-island-volcanology.com/wp-content/uploads/2020/03/rw-picture.jpegRW picture2020-03-12T10:55:21+00:00weekly0.6https://ascension-island-volcanology.com/people/bridie-davies/https://ascension-island-volcanology.com/wp-content/uploads/2019/09/me-in-hole2.jpgme in hole2https://ascension-island-volcanology.com/wp-content/uploads/2017/10/env-east-colour-logo.pngENV-East-Colour-logohttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/nerc-logo-1151.pngnerc-logo-115https://ascension-island-volcanology.com/wp-content/uploads/2017/10/nerc-logo-115.pngnerc-logo-115https://ascension-island-volcanology.com/wp-content/uploads/2017/10/me1.jpgmehttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/me2.jpgme2https://ascension-island-volcanology.com/wp-content/uploads/2017/10/me.jpgmehttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/14079627_10154985132965931_7864226072700897806_n.jpg14079627_10154985132965931_7864226072700897806_nhttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/14079536_10154985120740931_7426784021608266246_n.jpg14079536_10154985120740931_7426784021608266246_nhttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/18403744_10155809385615931_8697778602933806659_n.jpg18403744_10155809385615931_8697778602933806659_n2019-09-18T11:07:48+00:00weekly0.6https://ascension-island-volcanology.com/2019/03/29/sisters-scoria-secrets/https://ascension-island-volcanology.com/wp-content/uploads/2019/03/4.jpg4Scoria fall overlying a lava flow and draping over the Sister’s scoria cone. (Photo by Rich Brown)https://ascension-island-volcanology.com/wp-content/uploads/2019/03/figure-3.pngfigure 3There are obvious textural changes seen in the scoria, both from different units (B, D) and from beds within the same unit. They show a range of iridescent colours from blue (A) to green and pink (E) whilst others are dull with an ‘ashy’ coating (C). (Photos B and D from Rich Brown)https://ascension-island-volcanology.com/wp-content/uploads/2019/03/3e.jpg3ehttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/3d.jpg3dhttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/3b.jpg3bhttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/3c.jpg3chttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/3a.jpg3ahttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/2b.jpg2bhttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/2a.jpg2ahttps://ascension-island-volcanology.com/wp-content/uploads/2019/03/1.jpg1Sisters Volcanic Complex; the dark brown material is the youngest lava flow, and the foreground is an older lava flow covered by scoria. (Photo from Rich Brown).2019-03-29T15:16:51+00:00monthlyhttps://ascension-island-volcanology.com/2019/02/18/mysterious-blebs/https://ascension-island-volcanology.com/wp-content/uploads/2019/02/anabelle-blob-sketch.pnganabelle blob sketchhttps://ascension-island-volcanology.com/wp-content/uploads/2019/02/anabelle-blog-2.pnganabelle blog 2Photographs of hand samples of the pyroclasts. A) The base of one of the pyroclasts which contains scoria and lithic clasts (clasts of lava from an older eruption). B) Cut section showing how the glass has flowed internally and interacted with the scoria as it landed. C) Cuboid glassy clast with near parallel sides (shaped like a chocolate – but again not edible!). D) Spherical glass drop stuck to the exterior of the scoria clast, these appear to be quite a common feature across the samples and in the field photographs. E) A smaller feature of photograph A, there are delicate thin filaments bridging a narrow crack in the exterior of the sample. F) Bubbles in the glass which follow the edge of scoria clasts. https://ascension-island-volcanology.com/wp-content/uploads/2019/02/anabelle-blog-1.pnganabelle blog 1Above are photographs taken by Rich Brown during the 2018 field season 1) Tongue-like pyroclast that flowed on impact. 2) Broken glass filaments with thin glass bridging between them (a favourite as it resembles the Two Towers from The Lord of the Rings). 3) Larger glassy pyroclast that has undergone considerable post-impact flow. D) Glass droplet frozen onto the side of a scoria clast on the fissure edge. 2019-02-18T09:02:31+00:00monthlyhttps://ascension-island-volcanology.com/2019/01/25/volcanic-activity-in-the-age-of-discovery-new-dates-for-ascension-lavas/https://ascension-island-volcanology.com/wp-content/uploads/2019/01/image-dating-blog.pngimage dating blog2021-10-08T15:49:40+00:00monthlyhttps://ascension-island-volcanology.com/2018/10/08/rocky-walks-public-talks-and-a-really-big-box-updates-from-the-2018-field-season/https://ascension-island-volcanology.com/wp-content/uploads/2018/10/photo-4-density-measurements.pngphoto 4 - density measurementsVery technical stuff: the experimental set up to find the vesicularity of the pumice clasts from Echo Canyon. Each piece is wrapped in (science-y) cling film and weighed suspended in water to find the volume (using Archimedes principle) so that Bridie can calculate the density and therefore the vesicularity of pumice from each part of the deposit. To be statistically sound 100 pieces of pumice must be measured for each sample location….that’s around 700 pieces of pumice in total!https://ascension-island-volcanology.com/wp-content/uploads/2018/10/photo-3-ec-bags-of-pumice.pngphoto 3 - EC bags of pumiceLeft and right: Bridie and Jane standing triumphantly at the entrance to Echo Canyon with all their belongings attached to the outsides of their packs as they are filled with pumice at the end of sampling. Centre: typical, very fresh pumice clasts from the Echo Canyon pumice fall.https://ascension-island-volcanology.com/wp-content/uploads/2018/10/photo-2-ec-crystals.pngphoto 2 - EC crystalsA selection of photos showing the same set of crystals are present in all the units of the Echo Canyon sequence; A: a piece of pumice from the thick pumice fall at the base of the canyon with the typical feldspar crystals – two here growing into each other. B: pumice from the layered units at the top of the canyon. C: in the pumice at the very top of the sequence. D: feldspars in a weathered lava associated with the sequence but not seen from Echo Canyon. E and F: same crystals within the more and less weathered pink lava as seen in the photo looking into the canyon.https://ascension-island-volcanology.com/wp-content/uploads/2018/10/photo-1-bridie-spy.pngphoto 1 - Bridie SpyBridie using a laser range finder to measure the thicknesses of her favourite sequence of rocks on Ascension, looking from the Echo Canyon letterbox (which she climbed to twice because she loved this view so much).https://ascension-island-volcanology.com/wp-content/uploads/2018/10/feature-image.jpgfeature imageBridie's favourite view - Into Echo Canyon from the letterbox2018-10-08T09:24:54+00:00monthlyhttps://ascension-island-volcanology.com/people/jane-scarrow/https://ascension-island-volcanology.com/wp-content/uploads/2018/10/jane-photo.jpgVersion 32018-10-03T12:47:58+00:00weekly0.6https://ascension-island-volcanology.com/2018/06/04/ascension-here-we-come/https://ascension-island-volcanology.com/wp-content/uploads/2018/06/dscf8808.jpgDSCF88082018-06-04T14:25:53+00:00monthlyhttps://ascension-island-volcanology.com/people/charlotte-vye-brown/https://ascension-island-volcanology.com/wp-content/uploads/2018/05/charlotte.jpgCharlotte2018-05-29T12:44:22+00:00weekly0.6https://ascension-island-volcanology.com/the-geology-of-ascension-island/https://ascension-island-volcanology.com/wp-content/uploads/2017/12/green-mountain-scoria-katie-p1.jpgGreen Mountain Scoria Katie Phttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/green-mountain-scoria-katie-p.jpgGreen Mountain Scoria Katie Phttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/wideawakes.pngwideawakeshttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/white-hill-dome-e1513773611750.pngwhite hill domehttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/sisters-peak.pngsisters peakhttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/middleton-ridge.pngmiddleton ridgehttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/map-ascension-geo-background.pngmap ascension geo backgroundGeological map of Ascension Island - Adapted from Chamberlain et al., (2016)https://ascension-island-volcanology.com/wp-content/uploads/2017/12/tas-geo-background.pngtas geo backgroundhttps://ascension-island-volcanology.com/wp-content/uploads/2017/12/ascension-map-e1513771766496.pngAscension Map2017-12-20T12:45:18+00:00weekly0.6https://ascension-island-volcanology.com/2017/11/16/new-type-of-volcanic-bomb-uncovered-on-ascension-island/https://ascension-island-volcanology.com/wp-content/uploads/2017/11/feature-new-volcanic-bomb.pngfeature new volcanic bombhttps://ascension-island-volcanology.com/wp-content/uploads/2017/11/new-volcanic-bomb.pngnew volcanic 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Cohen2017-10-27T09:14:20+00:00weekly0.6https://ascension-island-volcanology.com/people/finn-stuart/2017-10-26T16:10:10+00:00weekly0.6https://ascension-island-volcanology.com/people/jon-davidson/2017-10-26T15:21:44+00:00weekly0.6https://ascension-island-volcanology.com/related-links-and-further-reading/partner-sites/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/partner-sitespg1.jpgpartner sitespghttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/partner-sitespg.jpgpartner sitespghttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/suerc.pngsuerc2017-10-26T14:41:20+00:00weekly0.6https://ascension-island-volcanology.com/related-links-and-further-reading/request-more/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/further-pg1.pngfurther pghttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/further-pg.pngfurther pg2017-10-26T14:34:05+00:00weekly0.6https://ascension-island-volcanology.com/people/jenni-barclay/2017-10-26T13:56:47+00:00weekly0.6https://ascension-island-volcanology.com/about-the-project/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image21.jpgimage22017-10-26T11:45:58+00:00weekly0.6https://ascension-island-volcanology.com/people/darren-mark/2017-10-26T08:27:20+00:00weekly0.6https://ascension-island-volcanology.com/related-links-and-further-reading/2017-10-26T08:06:56+00:00weekly0.6https://ascension-island-volcanology.com/people/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/peopleimg1.jpgpeopleimghttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/peopleimg.jpgpeopleimg2017-10-26T08:05:07+00:00weekly0.6https://ascension-island-volcanology.com/2017/10/25/april-may-2015-a-successful-field-season/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_11.jpg2015_11https://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_10.jpg2015_10https://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_9.jpg2015_92017-10-25T15:59:38+00:00monthlyhttps://ascension-island-volcanology.com/people/sue-loughlin/2017-10-25T15:42:42+00:00weekly0.6https://ascension-island-volcanology.com/2017/10/25/ascension-island-public-meeting-15th-april/2017-10-25T13:34:24+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/march-2015-the-geological-society-supports-second-field-season/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_7.jpgPrinthttps://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_6-zoned-empa.png2015_6 zoned + EMPA2017-10-25T13:19:55+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/february-2015-isotope-preparation/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_5-mc-icp_ms-dur.jpg2015_5 MC-ICP_MS dur2017-10-25T13:16:45+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/june-july-2014-ascension-fieldwork/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image30.jpgimage30https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image28.jpgimage28https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image29.pngimage29https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image27.pngimage27https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image26.pngimage262017-10-25T13:15:07+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/9-13th-september-2014-cities-on-volcanoes-8-conference-yogyakarta-indonesia/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/cities-on-volcanoes-image.pngcities on volcanoes image2017-10-25T13:14:21+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/october-2014-lab-work-lab-work-and-more-lab-work/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image36.jpgimage36https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image35.jpgimage35https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image34.jpgimage342017-10-25T13:13:53+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/november-2014-mineral-and-groundmass-separation/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image32.jpgimage32https://ascension-island-volcanology.com/wp-content/uploads/2017/10/image31.jpgimage312017-10-25T13:13:30+00:00monthlyhttps://ascension-island-volcanology.com/2017/10/25/january-2015-imaging-and-the-first-major-element-data/https://ascension-island-volcanology.com/wp-content/uploads/2017/10/2015_4-lavaletter.png2015_4 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