Antalo Limestone

Antalo Limestone
Stratigraphic range: Oxfordian-Kimmeridgian
~163–153 Ma
Formation at Kurkura village (Dogua Tembien), holding St. Mika'el's cave
TypeGeological formation
UnderliesMugher Mudstone
OverliesAdigrat Sandstone
Thickness800 m (2,600 ft)
Lithology
PrimaryLimestone, marl, calcareous sandstone
OtherGrainstone, wackestone
Location
Coordinates13°35′52″N 39°16′38″E / 13.5977°N 39.2772°E / 13.5977; 39.2772
Approximate paleocoordinates7°30′S 26°36′E / 7.5°S 26.6°E / -7.5; 26.6
RegionTigray
Country Ethiopia
 Eritrea
ExtentMekelle Outlier, Danakil Alps
Type section
Named forAntalo town
Named byWilliam Thomas Blanford
Year defined1868
Antalo Limestone is located in Ethiopia
Antalo Limestone
Antalo Limestone (Ethiopia)

The Antalo Limestone, also known as the Antalo Sequence, is a geological formation in Ethiopia. It is between 300 and 800 metres thick and comprises fossiliferous limestones and marls that were deposited in a reef. Marine microfossils have shown an age between 165 and 150 million years.[1][2]

  1. ^ Sembroni, A.; Molin, P.; Dramis, F. (2019). Regional geology of the Dogu'a Tembien massif. In: Geo-trekking in Ethiopia's Tropical Mountains - The Dogu'a Tembien District. SpringerNature. ISBN 978-3-030-04954-6.
  2. ^ Bosellini, A.; Russo, A.; Fantozzi, P.L.; Assefa, G.; Tadesse, S. (1997). "The Mesozoic succession of the Mekelle Outlier (Tigrai Province, Ethiopia)". Mem. Sci. Geol. 49: 95–116.