Climatic and eustatic signals in a global compilation of shallow marine carbonate accumulation rates
Article first published online: 26 MAR 2014
© 2014 The Authors. Sedimentology published by John Wiley & Sons Ltd on behalf of International Association of Sedimentologists.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Volume 61, Issue 5, pages 1286–1297, August 2014
How to Cite
Kemp, D. B., Sadler, P. M. (2014), Climatic and eustatic signals in a global compilation of shallow marine carbonate accumulation rates. Sedimentology, 61: 1286–1297. doi: 10.1111/sed.12112
- Issue published online: 14 JUL 2014
- Article first published online: 26 MAR 2014
- Accepted manuscript online: 29 JAN 2014 12:41PM EST
- Manuscript Accepted: 11 DEC 2013
- Manuscript Received: 22 JUL 2013
- Girton College
- Cambridge and NERC. Grant Number: NE/02089X/1
- Accumulation rate;
Two of the most important factors that control the accumulation rate of material in carbonate platform environments on geological time scales are climate and eustasy. Accurately assessing the importance of these inter-related factors through the study of both modern and ancient carbonate facies, however, is problematic. These difficulties arise from both the complexities inherent in carbonate depositional systems and the demonstrable incompleteness of the stratigraphic record. Here, a new compilation of more than 19 000 global Phanerozoic shallow marine carbonate accumulation rates derived from nearly 300 individual stratigraphic sections is presented. These data provide the first global holistic view of changes in shallow marine carbonate production in response to climate and eustasy on geological time scales. Notably, a clear latitudinal dependence on carbonate accumulation rates is recognized in the data. Moreover, it can also be demonstrated that rates calculated across the last glacial maximum and Holocene track changes in sea-level. In detail, the data show that globally averaged changes in carbonate accumulation rates lagged changes in sea-level by ca 3 kyr, reflecting the commonly observed delay in the response of individual carbonate successions to sea-level rise. Differences between the rates of carbonate accumulation and sea-level change over the past 25 kyr ostensibly reflect changing accumulation mode, with platform drowning (give-up mode) pervasive during peak Early Holocene sea-level rise, followed by a switch to catch-up mode accumulation from ca 9 ka to the present. Carbonate accumulation rates older than the Quaternary are typically calculated over time spans much greater than 100 kyr, and at these time spans, rates primarily reflect long-term tectonically mediated accommodation space changes rather than shorter term changes in climate/eustasy. This finding, coupled with issues of stratigraphic incompleteness and data abundance, tempers the utility of this and other compilations for assessing accurately the role of climate and eustasy in mediating carbonate accumulation rates through geological time.