Category Archives: Dendrochronology

The Arabian Horizon: The Big Chill

This gallery contains 19 photos.

Leona Libby’s Isotopic Tree Thermometers was published 40 years ago. Her paper was extraordinary in many ways. Firstly, Leona Libby applied an objective scientific methodology to dendrochronology. Long term isotope changes in precipitation, caused by changes in climatic temperatures, are … Continue reading

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The Arabian Horizon: The Year of the Elephant

This gallery contains 15 photos.

As the Spanish summer ramps down into autumn its time to ramp up the researching and writing. The outline plan [for next few weeks, or so] is to perform a basic reality check on some of the major historical narratives … Continue reading

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Guest Post by Louis Hissink

This gallery contains 6 photos.

Historical revisionism has identified a chronological and archaeological problem of post-Roman times where according, to some, 700 years of stratigraphic evidence is missing from the archaeological strata (Heinsohn various articles etc). Others propose an outright falsification of history (Heribert Illig), … Continue reading

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Greenland Guide to the First Millennium

This gallery contains 11 photos.

The archaeological narrative for Greenland in the 1st Millennium is essentially one long hiatus [aka lacuna aka void] that is only disturbed by the error bars of radiocarbon dating. The mainstream historical narrative only begins after the Heinsohn Horizon with … Continue reading

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Irish Guide to the First Millennium

This gallery contains 9 photos.

In Europe it’s now possible to recalibrate the Irish Oaks Δ14C chronology for the 1st Millennium using my trusty digitised Japanese Cedar Isotopic Tree Thermometer. An initial comparison of the Japanese and Irish chronologies doesn’t appear very promising but there … Continue reading

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Digitised Japanese Isotopic Tree Thermometer

This gallery contains 14 photos.

In 1994 Charles Ginenthal highlighted some of the fundamental problems associated with the Conflicting Chronologies produced by the mainstream Settled Scientists. In retrospect, we find that the tree ring record is contradicted by the coral record, which is contradicted by … Continue reading

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North American Guide to the First Millennium

This gallery contains 10 photos.

After my journey through 1st Millennium Mesoamerica it seems appropriate to make a detour through the United States and Canada to check the performance of my trusty Japanese Isotopic Tree Thermometer [and its three 1st Millennium outlier events] against the … Continue reading

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Mesoamerican Guide to the First Millennium

This gallery contains 11 photos.

Researching European History during the 1st Millennium is fraught with difficulties because the historical narrative was originally written by the Machiavellian Monasteries before being transmogrified [as require] to suit the needs of the Meddling Monarchies and the Anaemic Academics. Working … Continue reading

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Peat Bogs and The Heinsohn Horizon

This gallery contains 8 photos.

The mainstream climate narrative occasionally encounters discrepancies around the Heinsohn Horizon in the tenth century. Working backwards through the mainstream historical narrative we arrive at the Heinsohn Horizon in the 930s where the mainstream narrative falls into The Academic Abyss … Continue reading

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The ABCD Theory

This gallery contains 8 photos.

Trees are a prolific example of biodiversity. With an estimated 100,000 species, the number of trees worldwide might total twenty-five percent of all living plant species. … Trees exist in two different groups of vascular or higher plants, the gymnosperms … Continue reading

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Korea and The Heinsohn Horizon

This gallery contains 7 photos.

The history of Korea during the first millennium provides many fascinating parallels with the mainstream historical narrative developed by Western academics. Both narratives were constructed long after the event [based upon long lost sources] to further the political and religious … Continue reading

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The Frozen Fat Finger Fudge

This gallery contains 5 photos.

The Zoe ice core chronology between 1937 and 1951 shows the ammonium and nitrate traces are generally well [but not perfectly: see 1938] synchronised with well defined annual peaks during the [northern hemisphere] summer. The ammonium data have been multiplied … Continue reading

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The Anammox Amendment

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A knowledge gap in the Nitrogen Cycle was first identified in 1932. In 1932, it was reported that dinitrogen gas was generated via an unknown mechanism during fermentation in the sediments of Lake Mendota, Wisconsin, USA. https://en.wikipedia.org/wiki/Anammox From the 1940s … Continue reading

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The Little Ice Age

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François Matthes introduced The Little Ice Age into the mainstream narrative in 1939 and within a decade the storyline of The Little Ice Age was firmly established as a period of glacier advances between 1600 and 1850 AD. The Little … Continue reading

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The Medieval Warm Period and The Heinsohn Horizon

This gallery contains 14 photos.

The Medieval Warm Period was originally proposed by Hubert Lamb in 1965. The Medieval Warm Period (MWP) is generally thought to have occurred from about AD 950–1250, during the European Middle Ages. In 1965 Hubert Lamb, one of the first … Continue reading

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Mike Baillie and The Heinsohn Horizon

This gallery contains 12 photos.

Mike Baillie is a leading expert in dendrochronology. Michael G. L. “Mike” Baillie is Professor Emeritus of Palaeoecology at Queen’s University of Belfast, in Northern Ireland. Baillie is a leading expert in dendrochronology, or dating by means of tree-rings. In … Continue reading

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Isotopic Tree Thermometers and The Heinsohn Horizon

This gallery contains 4 photos.

In 1976 Leona Libby introduced the world to Isotopic Tree Thermometers. Libby showed that the atmospheric ratio of stable hydrogen and oxygen isotopes is preserved in tree-rings and demonstrated that this isotopic ratio is determined by atmospheric temperatures [at the … Continue reading

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Heinsohn and The Missing Trees

This gallery contains 10 photos.

One of the problems researchers encounter as they work their way back through history towards the Heinsohn Horizon is that trees have an alarming tendency to disappear into the oblivion of the Academic Abyss. Working backwards through the mainstream historical … Continue reading

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The Roman Warm Period

This gallery contains 3 photos.

Wikipedia isn’t impressed with the “proposed” and “popularized” Roman Warm Period. The Roman Warm Period or the Roman climatic optimum has been proposed as a period of unusually warm weather in Europe and the North Atlantic that ran from approximately … Continue reading

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de Vries Events

This gallery contains 21 photos.

One of the stranger stories embedded in mainstream mythology is the [roughly] 210 year de Vries Cycle in solar activity which was discovered by reading the proxy tealeaves provided by ΔC14 in tree rings, Be10 levels in ice cores and … Continue reading

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