Radiocarbon-dated Pollen Diagrams Research Articles

A Pollen Diagram from Hallowell Moss, Near Durham City, U.K.

A radiocarbon dated pollen diagram from Hallowell Moss, near Durham City, indicates that it was not until Romano-British times that man had much effect on the forests of the area. Organized clearance and farming in this marginal frontier zone of the Roman Empire was on a scale unparalleled in history until recently. During Anglo-Saxon and Mediaeval times

A Radiocarbon Dated Pollen Diagram from the Allegheny Plateau of New York State

A Radiocarbon Dated Pollen Diagram from the Allegheny Plateau of New York State

Prehistoric human activity and blanket peat initiation on Exmoor

IT now seems that the shallow tracts of peat which are so abundant in western parts of the British Isles began their development at about the time when the first signs of human activity became evident in the pollen record1,2 contained in the peat. These blanket mire complexes or “Terrainbedeckende Moore”3 have received relatively little attention from palaeoecologists and radiocarbon-dated pollen profiles are few; those which exist refer mainly to deposits from Ireland4,5 and the Southern Pennines6,7. We now present a radiocarbon-dated pollen diagram, from a blanket mire on Exmoor, Somerset, which throws further light on the coincidence of prehistoric human activity and the initiation of blanket peat formation.

Studies on Southern Pennine Peats: VI. A Radiocarbon-Dated Pollen Diagram from Featherbed Moss, Derbyshire

In Parts I and II of this series (Tallis 1964a, b), pollen diagrams from several upland blanket peat sites in the southern Pennines were compared, and horizons that were apparently synchronous between the various diagrams recognized. Tentative datings were assigned to these horizons on the basis of woodland clearance effects with which they were associated. Accompanying stratigraphic studies suggested that the macro-remains in these upland blanket peats might afford very sensitive indications of past climatic changes (Tallis 1964c). The present paper examines these previous findings in the light of a new detailed pollen diagram which has been radiocarbon-dated for certain critical horizons.

Pollen Sequence from Late Quaternary Sediments in Yellowstone Park

A radiocarbon-dated pollen diagram from a depression near the end of the southeast arm of Yellowstone Lake, Wyoming, records the vegetation sequence from the retreat of Late Wisconsin (Pinedale) ice to the present time. The tundra Picea-Abies-Pinus albicaulis (spruce-fir-whitebark pine) parkland vegetation inferred during late glacial time changed rapidly to a Pinus contorta (lodgepole pine) forest shortly before 11,550 carbon-14 years ago, suggesting a warming trend at that time. The Pinus contorta forest persisted with minor modification throughout postglacial time.