Siberian Flood Basalt Collection

Below is a list of our current rock collection. For more information regarding any sample below, please contact ltelkins@dtm.ciw.edu.

Sample # Region Description Unit or Rock type Latitude Longitude Bulk Analysis Completed Thin Section
A10-1.1 Angara Ust Ilimsk sill, west side of Angara under bridge abutment ~20 m above waterline Sill segregation vein 58.002333 102.686717 No No
A10-1.2 Angara Ust Ilimsk sill, west side of Angara under bridge abutment, 5 m below 1.1 Sill segregation vein 58.002333 102.686717 No No
A10-1.3 Angara Ust Ilimsk sill, west side of Angara under bridge abutment, coarse material from waterline Sill 58.002333 102.686717 No No
A10-1.4a Angara Ust Ilimsk sill, west side of Angara under bridge abutment, middle of glassy chill margin Sill 58.002333 102.686717 No Yes
A10-1.4b Angara Ust Ilimsk sill, west side of Angara under bridge abutment, finely crystalline transition below 1.4a Sill 58.002333 102.686717 No No
A10-1.4c Angara Ust Ilimsk sill, west side of Angara under bridge abutment, finely crystalline below 1.4b Sill 58.002333 102.686717 No No
A10-1.5 Angara Ust Ilimsk sill, west side of Angara under bridge abutment Sill 58.002333 102.686717 No No
A10-10.1 Angara Tuff from massive cliff-former, note many small black spheroids as seen elsewhere Tuff 58.772833 102.620350 No Yes
A10-10.2 Angara Sediment dike in fine-grained tuff Sedimentary 58.772833 102.620350 No No
A10-10.3 Angara Tuff about 50 m north of 10.1 and 5 m above waterline Tuff 58.772833 102.620350 No No
A10-11.1 Angara Massive cliff-forming tuff with possible lapilli, 1 m above water Tuff 58.792383 102.655600 No Yes
A10-11.2 Angara Sandstone Sandstone 58.793217 102.657733 No No
A10-11.3 Angara Tuff from 50 m upstream of 11.2, grey matrix Tuff 58.793217 102.657733 No Yes
A10-12.1 Angara Crystalline mafic rock Sill 58.783100 102.666083 No Yes
A10-12.2 Angara Mafic dike, small, vesicular Dike 58.780550 102.665117 No No
A10-12.3 Angara Typical tuff, lapilli Tuff 58.778733 102.664583 No Yes
A10-13.1 Angara Cliff on left bank of Kata 8 - 10 km from mouth; farthest east of all outcrops; 150 m tall; many small black fragments as elsewhere plus organic and basaltic clasts; clasts both rounded and angular, sedimentary and mafic, definite accretionary lapilli; this a coarse-grained igneous clast from near a lapilli-rich section Mafic clast 58.737861 102.721708 No Yes
A10-13.2 Angara Cliff on left bank of Kata 8 - 10 km from mouth; farthest east of all outcrops; 150 m tall; many small black fragments as elsewhere plus organic and basaltic clasts; clasts both rounded and angular, sedimentary and mafic, definite accretionary lapilli; this sample tuff matrix Tuff 58.737861 102.721708 No No
A10-13.3 Angara Cliff on left bank of Kata 8 - 10 km from mouth; farthest east of all outcrops; 150 m tall; many small black fragments as elsewhere plus organic and basaltic clasts; clasts both rounded and angular, sedimentary and mafic, definite accretionary lapilli; this sample tuff matrix Tuff 58.737542 102.719617 No Yes
A10-13.4 Angara Cliff on left bank of Kata 8 - 10 km from mouth; farthest east of all outcrops; 150 m tall; many small black fragments as elsewhere plus organic and basaltic clasts; clasts both rounded and angular, sedimentary and mafic, definite accretionary lapilli; several large pieces showing lapilli and beds Tuff 58.737542 102.719617 No Yes
A10-14.1 Angara 1 to 1.5 km continuous river cliff on right side of Kata River, further west (closer to Angara) than site 13; some lapilli beds, some fine-grained; this sample has many small lithic clasts and no obvious bedding Tuff 58.767103 102.686467 No No
A10-14.2 Angara 1 to 1.5 km continuous river cliff on right side of Kata River, further west (closer to Angara) than site 13; some lapilli beds, some fine-grained; this sample is a faintly bedded tuff about 20 m above waterline also in this bag: two thin slivers showing variability, one fine-=grained and one heterogeneous Tuff 58.769942 102.682289 No Yes
A10-15.1 Angara Massive cliff-forming tuff; no black particles; some channeldeposits; this sample a mafic dike Dike 58.740833 102.686600 No Yes
A10-15.2 Angara Massive cliff-forming tuff; no black particles; some channeldeposits; this sample the tuff itself Tuff 58.740833 102.686600 No Yes
A10-16.1 Angara West side of Kameniy Island where map incorrectly marks a Permian section; this a dike Dike 58.678700 102.681883 No Yes

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