Mulde event
From Wikipedia, the free encyclopedia
Key events in the Silurian
-444 —
–
-442 —
–
-440 —
–
-438 —
–
-436 —
–
-434 —
–
-432 —
–
-430 —
–
-428 —
–
-426 —
–
-424 —
–
-422 —
–
-420 —
–
-418 —
Key events of the Silurian Period.
Axis scale: millions of years ago.
Axis scale: millions of years ago.
The Mulde event was a secundo-secundo event,[3] and marked the second of three1 relatively minor mass extinctions (the Ireviken, Mulde, and Lau events) during the Silurian period. It coincided with a global drop in sea level, and is closely followed by an excursion in geochemical isotopes. Its onset is synchronous with the deposition of the Fröel formation in Gotland.[3]
Notes[edit]
^1 The Ireviken, Mulde, and Lau events were all closely followed by isotopic excursions.
References[edit]
- ^ Jeppsson, L.; Calner, M. (2007). "The Silurian Mulde Event and a scenario for secundo—secundo events". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 93 (02): 135–154. doi:10.1017/S0263593300000377.
- ^ Munnecke, A.; Samtleben, C.; Bickert, T. (2003). "The Ireviken Event in the lower Silurian of Gotland, Sweden-relation to similar Palaeozoic and Proterozoic events". Palaeogeography, Palaeoclimatology, Palaeoecology. 195 (1): 99–124. doi:10.1016/S0031-0182(03)00304-3.
- ^ a b Samtleben, C.; Munnecke, A.; Bickert, T. (2000). "Development of facies and C/O-isotopes in transects through the Ludlow of Gotland: Evidence for global and local influences on a shallow-marine environment". Facies. 43 (1): 1–38. doi:10.1007/BF02536983.
| Extinction events |
|---|
|
Minor events
Major events
│
−600
│
−550
│
−500
│
−450
│
−400
│
−350
│
−300
│
−250
│
−200
│
−150
│
−100
│
−50
│
0
Millions of years before present |
