Djupadal Formation
The Djupadal Formation is a geologic formation in Skåne County, southern Sweden. It is Early Jurassic (probably Pliensbachian-Toarcian, or Late Toarcian) in age. It is part of the Central Skåne Volcanic Province, know by the discovery of basalt tuff layers, including Sandåkra, Korsaröd and Djupadal.
| Djupadal Formation | |
|---|---|
| Stratigraphic range: Latest Pliensbachian- Latest Toarcian ~A Volcanic neck suggest 176.7 ± 0.5 Ma, Late Toarcian Age | |
About 10 m south of the shore of the Korsaröd lake exposed layers of the unit are known | |
| Type | Formation |
| Unit of | Central Skåne Volcanic Province |
| Sub-units | (in part) Sapropel at Sandåkra |
| Underlies | Cuaternary Sediments |
| Overlies | Höör Sandstone, Brandsberga and Kolleberga erratics and (in part) Sapropel at Sandåkra |
| Thickness | Up to 60 m (200 ft) |
| Lithology | |
| Primary | Basalt Tuff, Veined Gneiss |
| Other | Sandstone, Clay and Conglomerate |
| Location | |
| Coordinates | 55.98°N 13.63°E |
| Approximate paleocoordinates | Approx. 35°N |
| Region | Central Skåne County |
| Country | Sweden |
| Extent | 1,000 km2 (390 sq mi) |
| Type section | |
| Named for | Djupadalsmölla, Ljungbyhed |
| Named by | Carita Augustsson |
| Year defined | 2001 |
Djupadal Formation (Sweden) Korsaröd Lagerstätten Location | |
An original analysis of the location of Korsaröd led to a Toarcian-Aalenian age, but was dismissed in 2016, when a series of Palynogical samples recovered a Late Pliensbachian and probably Lower Toarcian age for the Korsaröd Outcrop. The same year this result was also challenged by an in-depth study of the Lilla Hagstad neck that yield a Late Toarcian Age.
The formation was deposited in the Central Skane region, linked to the late early Jurassic volcanism. The Korsaröd member includes a volcanic-derived Lagerstatten with exceptional fern finds. The data provided by fossilized wood rings showed that the location of Korsaröd hosted a middle-latitude Mediterranean-type biome in the late Early Jurassic, with low rainfall ratio, delayed to seasonal events. Superimposed on this climate were the effects of a local active Strombolian Volcanism and hydrothermal activity.