Page:Quarterly Journal of the Geological Society of London, vol. 25.djvu/76

 separated from one another by very thick beds of gypsum, particularly striking at Durrheim in the Schwarzwald, near Dieuze, and at several other places in Lothringen.

It is difficult to believe that while there exists a thickness of 24 feet of pure rock-salt, associated with saturated brine, on the borders of the Franconian basin near Salzungen, at the neighbouring Neustadt well, which yields saturated brine, and at the Kissingen well further towards the centre, only poor saline clay should have been deposited. It is far more probable that a thick rock-salt deposit is hidden beneath the Anhydrite, and would probably soon have been reached by a continuation of the boring in the Schonborn shaft, and thus have shown the future of the Kissingen saline wells.

In conclusion the author epitomizes the results of his researches upon the section in the Schonborn-well. in the accompanying section, and discusses the most probable mode of the formation of the Kissingen wells, the succession of the rocks, and their chemical condition.

Section of the Schonhorn Well at Kissingen.

Formations.

Liver-shale of the Lower Bunter, with so-called "Hornkalk" and Gypsum.

Bituminous Plattendolomit of the uppermost Zechstein.

Saliferous marls of the uppermost Zechstein.

Anhydrite.

Rocks.

Limestone

Granular and Crystalline Gypsum

Limestone

Compact gypsum

Red clay-shale alternating with Limestone, Marl, and Gypsum

Compact limestone with bisulphide of iron

Bluish-black limestone

Red saliferous clay with Gypsum

Blue saline clay

Brownish clay with Gypsum, saliferous

Salt-rock

Salt-rock with Gypsum

Salt-rock with Gypsum and Anhydrite

Anhydrite

Anhydrite alternating with Gypsum

Thickness. ft. in.

17 11

16 1

4 1

2 9

67 3

3 2

38 0

35 1

34 11

2 0

12 3

7 9

52 0

115 0

2 9

Depth. ft. in.

1590 9

1608 8

1624 9

1628 10

1631 7

1698 10

1702 0

1740 0

1775 1

1810 0

1812 0

1824 3

1832 0

1884 0

1999 0

2001 9