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Table 2 Lithostratigraphical subdivisions of the geology of Malta [22] and respective physical properties ([24]: 165)

From: Architectural ruins: geoculture of the anatomy of buildings as illustrated by Casa Ippolito, Malta

Formation

Porosity

(%)

Compressive uniaxial strength (N/mm2) (dry)

Flexural strength (N/mm2) (dry)

Member

Age

Upper coralline limestone

2.4–32.3

8.8–67.2

NA

Ġebel Imbark

Messinian

Tal-Pitkal

Tortonian/Messinian

Mtarfa

Tortonian

Għajn Melel

Tortonian

Greensand

23.8–32.4

NA

NA

 

Tortonian

Blue clay

X

X

X

 

Langhian/Tortonian

Globigerina Limestone

26.2–37.4

8.9–22.0

1.1–4.7

Upper Globigerina

Burdigalian/Langhian

Middle Globigerina

Aquitanian/Burdigalia

Lower Globigerina

Aquitanian

Lower coralline limestone

1.8–28.3

6.8–105.0

NA

Il-Mara

Chattian

Xlendi

Chattian

Attard

Chattian

Magħlaq

Chattian

  1. X not applicable, NA not available