COMMISSION ON MALTESE STRATIGRAPHY
The Executive Council approved a resolution on the 24th May 2022 to set up the Commission on Maltese Stratigraphy. This standing Committee has the following objectives:
The members of the Committee are:
Dr Daniel Sultana
Dr Niccolo Baldassini
Dr Ray Zammit
Dr Peter Gatt
Stratigraphic column of Maltese Islands
Key stages in the development of Maltese stratigraphy:
1854 Spratt distinguishes four 'groups' of rock.
1856 Earl of Ducie publishes Geological map of Malta showing five types of rock and phosphorite beds
1890 Murray names and establishes the five Formations of the Maltese Islands.
1932 Rizzo subdivides the Globigerina Limestone Formation into three Members, Upper, Middle and Lower.
1955 Dunham, Pedley, House and Wilson map the surface geology of the Maltese Islands
1957 BP publishes Geological map of Malta
Wigglesworth maps surface geology of Gozo
1976 Pedley, House and Waugh establish nomenclature for the Miocene phosphorite beds: C1 and C2 beds
1978 Pedley subdivides the Upper (UCL) and Lower Coralline Limestone (LCL) Formations into four Members each. LCL stratigraphy incomplete.
1993 Government of Malta publishes Geological map of Malta and Gozo
2005 Gatt adds C0 phosphorite bed
2009 Hilgen et al. establish the Serravallian Global Stratotype section and Point (GSSP) at the base of the of the Blue Clay Formation.
2012 Gatt adds Migra Ferha Member to Lower Coralline Limestone Formation.
2022 Gatt adds Zabbar Formation (Eocene).
June 2022, the Malta Chamber of Geologists establishes a standing Committee on Maltese Stratigraphy with the objectives of standardising Malta's stratigraphy.
One of the early Stratigraphic columns of Maltese rocks (1856)
Table: Stratigraphy of the Maltese Islands through time (Malta Group). Bold lettering denotes the first use of the stratigraphic name which became part of the accepted stratigraphy of the Maltese Islands and subsurface.
Stratigraphic column based on
Pedley (1978), Gatt (2005), Gatt (2012), Gatt (2022).
Updated stratigraphy of the Lower Coralline Limestone Formation (Oligocene) and naming of Eocene carbonates as Zabbar Formation (Gatt, 2022).
INTERNATIONAL COMMISSION ON STRATIGRAPHY