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List of works by James H. Wittke

A Tunguska sized airburst destroyed Tall el-Hammam a Middle Bronze Age city in the Jordan Valley near the Dead Sea ⬇️

scholarly article

Abu Hureyra, Syria, Part 2: Additional evidence supporting the catastrophic destruction of this prehistoric village by a cosmic airburst ~12,800 years ago

scientific article published in 2023

Author Correction: A Tunguska sized airburst destroyed Tall el-Hammam a Middle Bronze Age city in the Jordan Valley near the Dead Sea ⬇️

correction to a paper by Bunch et al. 2021

Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. for Younger Dryas boundary on four continents ⬇️

scholarly article

Ctenacanthiform sharks from the Permian Kaibab Formation, northern Arizona

article

Discovery of a nanodiamond-rich layer in the Greenland ice sheet ⬇️

scholarly article

Evidence for an Extraterrestrial Impact Event 12,900 years ago that Contributed to Megafaunal Extinctions and the Younger Dryas Cooling ⬇️

abstract PP43A-01 for the American Geophysical Union, Spring Meeting 2007

Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling ⬇️

journal article published in 2007

Evidence for deposition of 10 million tonnes of impact spherules across four continents 12,800 y ago ⬇️

scholarly article

Evidence from central Mexico supporting the Younger Dryas extraterrestrial impact hypothesis ⬇️

scholarly article

Evidence of Cosmic Impact at Abu Hureyra, Syria at the Younger Dryas Onset (~12.8 ka): High-temperature melting at >2200 °C ⬇️

scholarly article

Extraordinary Biomass-Burning Episode and Impact Winter Triggered by the Younger Dryas Cosmic Impact ∼12,800 Years Ago. 1. Ice Cores and Glaciers

article

Extraordinary Biomass-Burning Episode and Impact Winter Triggered by the Younger Dryas Cosmic Impact ∼12,800 Years Ago. 2. Lake, Marine, and Terrestrial Sediments ⬇️

article

Extraordinary Biomass-Burning Episode and Impact Winter Triggered by the Younger Dryas Cosmic Impact ∼12,800 Years Ago: A Reply

scholarly article

Geochemical data reported by Paquay et al. do not refute Younger Dryas impact event ⬇️

scholarly article

Hexagonal Diamonds (Lonsdaleite) Discovered in the K/T Impact Layer in Spain and New Zealand ⬇️

abstract PP13C-1476 for the American Geophysical Union, Fall Meeting 2008

Impact melt- and projectile-bearing ejecta at Barringer Crater, Arizona

Impact-Shocked diamonds, Abrupt Ecosystem Disruption, and Mammoth Extinction on California's Northern Channel Islands at the Allerod-Younger Dryas Boundary (13.0-12.9 ka) ⬇️

abstract PP23D-04 for the American Geophysical Union, Fall Meeting 2008

Magnetism of microspheres from the proposed Younger Dryas Impact event 12,900 years ago ⬇️

abstract #1719 from the 44th Lunar and Planetary Science Conference

Melt spherules from Peter's Pond, a Carolina Bay, South Carolina

abstract from the 70th Annual Meeting of the Meteoritical Society

Nanodiamond-rich layer across three continents consistent with major cosmic impact at 12,800 cal BP ⬇️

journal article published in 2014

Nanodiamonds and Carbon Spherules from Tunguska, the K/T Boundary, and the Younger Dryas Boundary Layer ⬇️

abstract PP31D-1392 for the American Geophysical Union, Fall Meeting 2009

New Physical Evidence for a Cosmic Impact with the Earth at 12.9 ka

poster for the The American Quaternary Association Conference 2010

Northwest Africa 032: Product of lunar volcanism

scientific article

Presence of all Three Allotropes of Impact-Diamonds in the Younger Dryas Onset Layer (YDB) Across N America and NW Europe ⬇️

abstract PP23D-01 for the American Geophysical Union, Fall Meeting 2008

Reply to Boslough et al.: Decades of comet research counter their claims ⬇️

scientific article (publication date: 5 November 2013)

Reply to Holliday and Boslough et al.: Synchroneity of widespread Bayesian-modeled ages supports Younger Dryas impact hypothesis ⬇️

scholarly article

Reply to Ives and Froese: Regarding the impact-related Younger Dryas boundary layer at Chobot site, Alberta, Canada. ⬇️

scientific article published on October 2013

Reply to van Hoesel et al.: Impact-related Younger Dryas boundary nanodiamonds from The Netherlands ⬇️

scholarly article

Serpentinization-related nickel, iron, and cobalt sulfide, arsenide, and intermetallic minerals in an unusual inland tectonic setting, southern Arizona, USA

scientific article

Shock-synthesized hexagonal diamonds in Younger Dryas boundary sediments ⬇️

journal article published in 2009

Soil Composition Inside the Possible Crater in Bolivia, Iturralde: Material Implying Impact Event of Low Density Meteorite ⬇️

abstract #1705 for the 44th Lunar and Planetary Science Conference (2013)

Summary of impact markers and potential impact mechanisms for the YDB impact event at 12.9 ka ⬇️

abstract PP33B-10 for the American Geophysical Union, Fall Meeting 2009

The Quaternary impact record from the Pampas, Argentina

scholarly article

Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago ⬇️

scholarly article

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