Infilling of the Canche Estuary (eastern English Channel, France): Insight from benthic foraminifera and historical pictures

Abstract This chapter reviews the progress made between the years 1965 and 2000 in temporal techniques and their importance for the study of landforms. The chapter begins with discussion of advances in chronostratigraphy and of the important contributions to geomorphology that came from palaeoenvironmental reconstruction, notably through the study of marine sediments and ice cores. A more detailed discussion then follows of developments and advances in dating methods, grouped by radiometric and radiometric-related, incremental, age-equivalent markers, and relative, with emphasis on the ways in which the new techniques opened up new avenues in the study of landforms.

Landform

Radiometric dating

Chronostratigraphy

10.1144/m58-2020-26

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Citations (4)

K-Ar age of the Kn-1 Tuff in the Miocene marine sequence in the Boso Peninsula, central Japan.

Journal of the Japanese Association for Petroleum Technology (2001)

Masaki Takahashi Toshinori Okada

A K-Ar age was determined for the Kn-1 Tuff in the Miocene marine sequence of the Kawadani section in the Boso Peninsula, central Japan. The weighted-mean age of 14.95±0.24Ma (±σ error) was calculated from two ages on Kn-1 biotite (14.96±0.34Ma and 14.93±0.34Ma). Combining with previously reported radiometric ages of other tuff layers, the established chronostratigraphy based on the radiometric dating indicates decline of the sedimentation rate between the Kn-3 Tuff in the upper part of the Kinone Formation and the Am-4 Tuff in the lowest part of the Amatsu Formation. The previously established biostratigraphy of microfossils is almost consistent with the chronostratigraphy of radiometric ages, while only the age of the last occurrence of Eucyrtidium asanoi (radiolaria) is suggested to be younger (ca. 12.2-12.7Ma) than the previous estimation (13.56-13.85Ma) by Morley and Nigrini (1995).

Chronostratigraphy

Radiometric dating

Peninsula

Sequence (biology)

Absolute dating

K–Ar dating

10.3720/japt.66.396

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Citations (2)

Nine 40Ar/39Ar dates from Carboniferous igneous rocks of the Midland Valley of Scotland

Alison Monaghan M. A. E. Browne

This report describes the location and character of ten Carboniferous-Permian igneous rock samples from the Midland Valley of Scotland and the results of 40Ar/39Ar step-heating experiments on nine of the samples to obtain the radiometric age of eruption or emplacement of the rock. The quality of the new radiometric ages are discussed along with their integration with the chronostratigraphy, lithostratigraphy and biostratigraphy of the Midland Valley of Scotland.

Chronostratigraphy

Radiometric dating

Lithostratigraphy

Absolute dating

Source

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Citations (4)

Reconstructing recent environmental changes using non-biting midges (Diptera: Chironomidae) in two high mountain lakes from northern Patagonia, Argentina

Journal of Paleolimnology (2017)

Fernanda Montes de Luciana Motta María Sofía Plastani Cecilia Laprida Andrea Lami

Subfossil

Paleolimnology