diff --git a/geolog.htm b/geolog.htm index 31a42d781..b5236a1a0 100644 --- a/geolog.htm +++ b/geolog.htm @@ -1,6 +1,7 @@ + - + CUCC Austria Expeditions: Geological Outline @@ -141,6 +142,8 @@ Link to Anonymous Geological Outline (2015?).
Link to Jared's Geological Guide (1988).
+Link to Tony Malcolm's Geological Guide (1982). +
Link to Excellent long article on Dachsteinkalk
diff --git a/years/1981/cavdev.htm b/years/1981/cavdev.htm index 85bce4873..67653de9f 100644 --- a/years/1981/cavdev.htm +++ b/years/1981/cavdev.htm @@ -1,9 +1,9 @@ - + - + Cambridge Underground 1982: Expo Cave Development @@ -234,20 +234,19 @@ discoveries.

Tony Malcolm -

- - +
+Link to Wikipedia: Eastern Alps Geology. +
+Link to Anonymous Geological Outline (2015?). +
+Link to Jared's Geological Guide (1988). +
+Link to Tony Malcolm's Geological Guide (1982). +
+Link to Excellent long article on Dachsteinkalk +
+ + + diff --git a/years/1987/geolog.htm b/years/1987/geolog.htm index 77fdb4288..23dd26322 100644 --- a/years/1987/geolog.htm +++ b/years/1987/geolog.htm @@ -1,7 +1,7 @@ - + - + 1987: Cambridge Underground report @@ -17,7 +17,7 @@ Totengebirgs, Austria Northern Calcareous Alps, the northern part of the Eastern Alps. The sedimentology and structural geology of the Northern Calcareous Alps is described. - +

Structure and Genesis of the Eastern Alps

The caving area is situated in the Eastern Alps. The northern part of this @@ -34,7 +34,7 @@ overthrusting of the sheets during the Tertiary. The strike of the rocks tends to be east-west as they are arched about an axis in this direction. Generally, the dip direction in the Northern Calcareous Alps is northward, because they are to the north of the axis. - +

The thrusting and arching is related to a shortening of the crust in a north-south direction, which occurred during the Alpine mountain building period. The Alps were formed when the African tectonic plate ploughed into @@ -44,7 +44,7 @@ progress; the Alps are still rising at about the same rate as they are being eroded. If uplift were to cease, and erosion continue at the present rate, the Alps would be denuded after just three million years. This is very little on the geological time scale. - +

Summary of the Geological History of the Calcareous Alps

Due to subsidence in the basement in the Permian, an east-west zone of @@ -61,13 +61,13 @@ some areas deposition continued into the Cretaceous. During Late Cretaceous time, parts of the Calcareous Alpine facies became detached and slid over others. The main northwards movement leaving the Calcareous Alps in their present position occurred during the Eocene. - +

The Northern Calcareous Alps: Sedimentary Rock Types

The oldest rocks seen in the area are of Triassic age, and were produced in a submarine reef environment. The existence of three distinct reef-related depositional environments (facies) can be inferred from the rocks (Fig. 2) - +

  1. Haupt Dolomit facies. This rock type was laid down behind the main reef, in the quiet back reef lagoon. Cycles of deposition are apparent as are @@ -96,7 +96,7 @@ Limestone facies. Triassic in terms of depositional environment. In the North there are marls and cherty limestones, whereas in the South, reef limestone are more important. Units of coarse clastics (sandstones and breccias) occur. - +

    Structure of the Northern Calcareous Alps

    Generally, the region is not intensely folded, being more characterised by @@ -114,7 +114,7 @@ brought in from the south by thrust faulting. This has been deduced from borehole information as well as from the outcrop pattern, though how far to the south the rocks were formed is not clear, nor is it agreed whether thrusting occurred mainly along one plane or equally along several. - +

    Guide to the CUCC area: the Totengebirgs and the Loser Plateau

    A map of the area is given (Fig. 3). @@ -135,47 +135,31 @@ differentiated on the map. The depth potential of the area is limited to slightly more than a kilometre by the water table rather than the base of the Dachstein limestone, this being at the level of the surface of the adjacent lake Altausseer See. - +

    Acknowledgements: I am indebted to Hans Schönlaub of the Geologische Bundesanstalt, Wien for his help in sending literature, and to Professor Oxburgh of the Department of Earth Sciences, Cambridge, for allowing the reproduction of his diagrams. - +

    Bibliography: - +

    OXBURGH, E.R. (1968), The Geology of the Eastern Alps, The Geologists Association, London. - +

    PLOCHINGER, B. (1984), Nordkalkalpen, Monograph of the Austrian Geological Survey, Wien. - +

    TOLLMAN, A. (1985), Die Nordlichen Kalkalpen. - +

    Link to Wikipedia: Eastern Alps Geology.
    Link to Anonymous Geological Outline (2015?).
    -Link to Olaf's Geological Outline (2012). +Link to Jared's Geological Guide (1988). +
    +Link to Tony Malcolm's Geological Guide (1982).
    Link to Excellent long article on Dachsteinkalk
    - -