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Barrika flint

Material name: Barrika flint
Synonyms: N/A
Material (geologic): Late Cretaceous (Cenomanian to Maastrichtian) flint

Detail of Barrika flint
Photo: John Rissetto, 2007

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Playa de Barrika
Locality: Playa de Barrika, Basque Country/Euskadi, Spain
Synonyms: N/A
Geographical description: Exposure at foot of cliff on beach, around 3 m asl.
Topographical map 1:25 000 37-IV Algrota.
Geological map 1:50 000 37 Algrota (1975) 21-4.

Length of identified source area: approx. 1200 meters.
Thickness of chert bearing layers: approx. 30 meters.
Type of source: primary.

Geographical co-ordinates: Lat. 43° 24' N
Long. 002° 59' W
(Mapdatum WGS 84)
Co-ordinate precision: The coordinates are given to the nearest minute. If you need more detailed information about this location, please contact the author.
  Detail of banded flint
Photo: John Rissetto, 2007
 
Macrophoto of banded flint.
banded flint
Photo: John Rissetto, 2007
 
Banded, slightly greenish flint.
  banded flint
Photo: John Rissetto, 2007
 
Flake with numerous small bioclasts.
Split nodule
Photo: John Rissetto, 2007
 
Split rolled nodule.
  banded flint
Photo: John Rissetto, 2007
 
Finely banded material.
Block of flint
Photo: John Rissetto, 2007
 
Block of strong-coloured flint.
  Opaque flint
Photo: John Rissetto, 2007
 
Block of opaque, slightly veined flint.
Detail of opaque material
Photo: John Rissetto, 2007
 
Detail of the same specimen.
Sample description: Host Rock according to the 1:50 000 map from the Instituto Geologico Y Minero de España (IGME) (Spanish - English)
C 21-26 - Tramo calcareo - Calcarceous Level

Chert quality: high.
Form of nodules: amorphous, partly bedded.
Maximum dimensions of nodules: 40 cm.
Fracture pattern: conchoidal.


 

Last modified on:
December 13, 2007
Contents primarily by:
John Rissetto
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