Radiocarbon dating

In the sciences, it is important to distinguish between precision and accuracy. If we use the analogue of a clock we can investigate this further. Your wrist watch may measure time with a precision of one second. A stop watch may time your race with a precision of one hundredth of a second. However, if the clocks change and you forget to reset your wrist watch, then you have a very precise time but it is not very accurate — you will be an hour early or late for all of your meetings!

How men over 30 can date women age 18 to How men in their late 40s, 50s, or 60s can date women 20 – 30 years younger. How to overcome the “age difference” issue and other related objections.

The wide range of glacial types across the Antarctic Peninsula has resulted in a range of responses. The response of land-terminating glaciers across the Antarctic Peninsula is particularly interesting, because land-terminating glaciers respond in a linear fashion to changes in temperature and precipitation. Land-terminating glaciers on James Ross Island and nearby land have been observed to be shrinking, and this has resulted in several campaigns to monitor long-term glacier mass balance in the region.

Studies of glaciers are limited to either a short temporal scale era of satellite observations or are limited to small numbers of glaciers field-based measurements. Aims and Objectives It is important to characterise the centennial-scale behaviour of small land-terminating glaciers in this region, in order to understand these short-term variations. Over a 7-week field season in January-March , Jonathan Carrivick, Bethan Davies and Neil Glasser investigated prominent moraines in front of small land-terminating glaciers.

Our objectives were, Holistic geological descriptions of the topography, sedimentology and geomorphology of the prominent ice-cored moraines; Interpretation of the character and behaviour of those glaciers while they were at this relatively advanced position, and; Quantification of the geometric changes to these glaciers during the Late Holocene. The Ulu Peninsula comprises large areas of Cretaceous sandstone and mudstone, overlain by multiple layers of basalt and hyaloclastite.

Radiocarbon dates on organic remains on James Ross Island suggest that the Ulu Peninsula became ice-free following the Last Glacial Maximum by around years ago, with a glacial readvance that finished around years ago. Ulu Peninsula has several small cirque glaciers with pronounced ice-cored moraines, which relate to a more recent glacier readvance.