Ari Matmon

Ari Matmon
Hebrew University of Jerusalem | HUJI · Fredy and Nadine Herrmann Institute of Earth Sciences

Professor

About

139
Publications
30,155
Reads
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3,460
Citations
Citations since 2017
48 Research Items
1686 Citations
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250

Publications

Publications (139)
Article
Deciphering aspect-related hillslope asymmetry can enhance our understanding of the influence of climate on Earth’s surface morphology and the linkage between topographic morphology and erosion processes. Although hillslope asymmetry is documented worldwide, the role of microclimatic factors in the evolution of dryland cliffs has received little at...
Article
Full-text available
Evaluating the impact and implications of eolian repositories that mark large-scale climatic transitions requires knowledge about the timing of their emplacement and the mechanisms responsible for their production, which remain highly uncertain. Here we apply numerical modeling of cosmogenic nuclide data, measured in the largest continuous terrestr...
Chapter
Humans evolved in the dynamic landscapes of Africa under conditions of pronounced climatic, geological and environmental change during the past 7 million years. This book brings together detailed records of the paleontological and archaeological sites in Africa that provide the basic evidence for understanding the environments in which we evolved....
Article
Full-text available
The weathering of continental surfaces and the transport of sediments via rivers into the oceans is an integral part of the dynamic processes that shape the Earth's surface. To understand how tectonic and climatic forcings control regional rates of weathering, we must be able to identify their effects on sedimentary archives over geologic timescale...
Article
Full-text available
To understand the timing of deglaciation of the northernmost marine-terminating glaciers of the Cordilleran Ice Sheet (CIS), we obtained 26 ¹⁰ Be surface-exposure ages from glacially scoured bedrock surfaces in Prince William Sound (PWS), Alaska. We sampled six elevation transects between sea level and 620 m and spanning a distance of 14 to 70 km a...
Preprint
Full-text available
The onset and intensification of eolian activity mark climatic transitions that promote wide-scale aridification, recorded by the generation and preservation of massive sand deposits. Evaluating the impact and implications of such repositories on Earth systems requires knowledge about the timing of their emplacement and the mechanisms responsible f...
Article
Cave sediments pose dating challenges due to complex depositional and post-depositional processes that operate during their transport and accumulation. Here, we confront these challenges and investigate the stratified sedimentary sequence from Wonderwerk Cave, which is a key site for the Earlier Stone Age (ESA) in Southern Africa. The precise ages...
Article
Carbonate hillslopes are often soil mantled and display a classic convex morphology. In this study we examine controls on carbonate hillslope denudation and morphology using a modified regolith mass balance equation to account for chemical weathering and dust input—two fluxes that are commonly neglected in settings with silicate-dominated bedrock....
Article
The structural depression that occupies the Okavango Basin in southern Africa comprises a depo-centre within the intracratonic Kalahari Basin where sediments of the Cenozoic Kalahari Group have accumulated. The Okavango Basin has been formed due to stretching and subsidence at an area of diffused deformation, southwestwards to the main East African...
Data
List of Supplementary Tables provided in a spreadsheet (548-07-SuppMat-Tables.xlsx) Table S1. 10Be data Table S2. 26Al data Table S3. Data for CRONUS-Earth online calculator version 2.3 (http://hess.ess.washington.edu) Table S4. Outlier evaluation by normalized deviation method (Batbaatar et al., 2018) Table S5. Outlier evaluation using Chauvenet'...
Data
Text and figures for the following topics are included in this supplementary document: Selection of the study sites and literature data Sensitivity of apparent exposure ages to boulder erosion Quality assessment of the exposure ages Modern and MIS 2 ELA gradients along the latitude Photos of sampled boulders and surface features in the study sites...
Chapter
Full-text available
Stephen C. Porter was an international leader in Quaternary science for several decades, having worked on most of the world’s continents and having led international organizations and a prominent interdisciplinary journal. His work influenced many individuals, and he played an essential role in linking Chinese Quaternary science with the broader in...
Conference Paper
Full-text available
Convex soil-covered hillslopes are ubiquitous in various tectonic and climatic settings and are often modeled based on a mass balance relating hillslope convexity to regolith transport and soil production. In order to account for chemical weathering of carbonate rocks and dust input to the regolith, two fluxes that are commonly neglected in setting...
Article
Full-text available
Optically stimulated luminescence (OSL) of quartz is an established technique for dating late Pleistocene to late Holocene sediments. Unfortunately, this method is often limited to up to 100 ka (thousands of years). Recent developments in new extended-range luminescence techniques show great potential for dating older sediments of middle and even e...
Article
Full-text available
In this work, we utilize a novel application of cosmogenic 21Ne measurements in chert to compare exposure times measured in eroding surfaces in the central Jordanian Plateau with exposure times from chert pebbles transported by the Miocene Hazeva River. The Miocene Hazeva River was a large fluvial system (estimated catchment size > 100 000 km2) tha...
Article
The long-term bedrock incision of streams in the northeastern Negev has been dictated, since the Early Pliocene, by the subsidence of the Dead Sea basin. However, this incision is accompanied by very long intervals of sediment aggradation. Here, we document the Quaternary-scale fluvial response to changing base-level, lithology, structure, and clim...
Article
Erosion related to glacial activity produces enormous amounts of sediment. However, sediment mobilization in glacial systems is extremely complex. Sediment is derived from headwalls, slopes along the margins of glaciers, and basal erosion; however, the rates and relative contributions of each are unknown. To test and quantify conceptual models for...
Preprint
Full-text available
Abstract. Optically stimulated luminescence (OSL) on quartz is an established technique for dating late Pleistocene to late Holocene sediments. Unfortunately, this method is often limited to up to 100 ka (thousands of years). Recent developments in new extended range luminescence techniques show great potential for dating older sediments of middle...
Conference Paper
Hillslope aspect has a prominent global influence on slope morphology. However, the relative role of micro-climatic factors in escarpment evolution and retreat pattern is still unknown. Here, we quantify aspect-dependent cliff retreat, clast transport rates, and slope and rill dynamics based on high-resolution (0.5 m2) LiDAR-derived topographic dat...
Preprint
Full-text available
The Miocene Hazeva River was a large fluvial system (estimated catchment size > 100 000 km²) that drained the Arabian Plateau and Sinai Peninsula into the Mediterranean Sea during the Early–Mid Miocene. It was established after rifting of the Red Sea uplifted the Arabian Plateau during the Oligocene. Following late Miocene to early Pliocene subside...
Article
In situ-produced cosmogenic ¹⁰ Be and ²⁶ Al measurements are widely applied in geomorphological studies and in archaeology and paleoanthropology as a chronologic tool applicable to the past 5 Ma. While most of these measurements are made from concentrates of quartz, a ubiquitous and resistant mineral, it is of great interest to extend this method t...
Article
A multidisciplinary study was conducted in a newly discovered Paleolithic locality, named ‘Evron Landfill. This locality is a part of the Lower Paleolithic complex of ‘Evron located at the western Galilee, Israel. Examination of artifacts has enabled the cultural attribution of ‘Evron Landfill to the Early Acheulian, while detailed paleomagnetic st...
Presentation
The relationship between denudation of continents and the rivers that drain them have been extensively researched over a wide range of timescales and stream-sizes. However, our understanding of fluvial geomorphology in the deep geological past is extremely limited. Recent developments in the field of cosmogenic nuclides have established stable nucl...
Article
This work sets out to test the applicability of stable cosmogenic ²¹Ne for quantifying the rates of surface processes over time scales of 10⁷–10⁸ yr and the potential limitations and pitfalls associated with such time spans. First, we examine several processes in addition to in-situ production during exposure that affect the final measured concentr...
Article
Thermally-Transferred Optically Stimulated Luminescence (TT-OSL) from quartz is an extended-range luminescence dating technique, with an assumed potential to date sediments as old as early Pleistocene (0.8–2.6 Ma). However, one of the main drawbacks of the TT-OSL signal is its relatively low thermal stability. The few and scattered estimates in the...
Article
Drainage system reorganization and late Quaternary tectonic deformation along the southern Dead Sea Transform – ADDENDUM - Volume 90 Issue 2 - Yedidia Gellman, Ari Matmon, Amit Mushkin, Naomi Porat
Article
Sand deposits cover extensive areas both in the northern and southern hemispheres and the timing and chronology and processes that govern their dynamics are of major interest. Luminescence-based dating methods, are used to date episodic aeolian events but are restricted to late Quaternary deposits, and only reveal the last cycle of sediment burial...
Article
The Dead Sea Transform (DST) accounts for ~105 km of left-lateral slip between the Arabian plate and the Sinai subplate since the Miocene. Paleoseismic studies along the Arava Valley segment of the DST suggest that late Quaternary deformation has been primarily concentrated along the axis of the transform valley. Here, we examine late Quaternary ch...
Article
The upper limit of optically stimulated luminescence (OSL) dating technique is usually defined by signal saturation. In nature the OSL signal saturates even faster than in the laboratory. Here we present a study on natural saturation of OSL and thermally transferred OSL (TT-OSL) signals of quartz grains from Nilotic origin. Quartz samples from two...
Article
Quantitative geomorphic field studies and modeling efforts have focused on the margins of southwestern Africa as an example for landscape evolution in prolonged aridity conditions and tectonic quiescence of passive margins. These efforts concluded that this region is a prime example of a steady state landscape, in which relief changes extremely slo...
Article
Full-text available
Mountain glaciers at ~26–19 ka, during the global Last Glacial Maximum near the end of the last 10^5 yr glacial cycle, are commonly considered on the basis of dating and field mapping in several well-studied areas to have been the largest of the late Quaternary and to have advanced synchronously from region to region. However, a numerical sensitivi...
Data
Online Supplement 1 includes seven figures for surface features and sampled boulders, text explaining the outlier identification techniques, and four tables for 10Be data, temperature and relative humidity measurements in Sutai range, summary of modern climate at the study sites, and LGM and Holocene conditions at the study sites, and the reference...
Presentation
Cosmogenic nuclides have long been an important tool to evaluate rates of surface processes, to record the time sediments spent at the surface and to quantify transport durations and erosion rates. Unlike their radioactive counterparts, stable cosmogenic nuclides (mostly 21Ne and 3He) can theoretically help to decipher landscape evolution and conti...
Article
The neotectonics of southern Alaska (USA) are characterized by a several hundred kilometers-wide zone of dextral transpressional that spans the Alaska Range. The Denali fault system is the largest active strike-slip fault system in interior Alaska, and it produced a Mw 7.9 earthquake in 2002. To evaluate the late Quaternary slip rate on the Denali...
Article
The presence of boulders, a result of rockfall events, at the foot of cliffs testifies for a mass wasting process which is widely observed and is often considered to be triggered by earthquakes. Here we investigate boulders under an overhanging cliff with an emphasis on the principal factors that control boulder size. We used a conceptual cantileve...
Conference Paper
Full-text available
The equilibrium-line altitude (ELA) of a glacier is a measure of mass balance, the altitude at which accumulation equals ablation. Greater accumulation drives ELA lower. Ablation depends on the total energy the glacier receives from insolation, which increases with altitude, and transfer of heat from the atmosphere, which decreases. Generally, ice...
Conference Paper
Denudation of carbonate terrains is dominated by chemical weathering and can therefore be treated as a rain gauge proxy where the mass lost by dissolution over time is proportional to the time-integrated precipitation. Hence, the denudation history of carbonate landscapes may provide paleo-precipitation data and can shed light on the interactions b...
Article
Full-text available
Kalahari Group sediments accumulated in the Kalahari basin, which started forming during the breakup of Gondwana in the early Cretaceous. These sediments cover an extensive part of southern Africa and form a low-relief landscape. Current models assume that the Kalahari Group accumulated throughout the entire Cenozoic. However, chronology has been r...
Article
Full-text available
Denudation of carbonate terrains dominated by chemical weathering can be treated as a rain gauge proxy, because the mass lost by dissolution over time is proportional to the time-integrated precipitation. Therefore, the denudation history of carbonate landscapes may provide paleoprecipitation data and shed light on the interactions between climate,...
Article
Full-text available
Water plays a critical role in erosion and sediment transport and this relationship is most evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by erosion rates that fall to near zero and cobbles and boulders with cosmogenic nuclide concentrations indicative of exposure for many millions of years. Cosmogenic nuclide co...
Article
The Dead Sea fault (DSF) is one of the most active plate boundaries in the world. Understanding the Quaternary history and sediments of the DSF requires investigation into the Neogene development of this plate boundary. DSF lateral motion preceded significant extension and rift morphology by ~ 10 Ma. Sediments of the Sedom Formation, dated here bet...
Article
Mesas are ubiquitous landforms in arid and semiarid regions and are often characterized by horizontal stratified erodible rocks capped by more resistant strata. The accepted conceptual model for mesa evolution and degradation considers reduction in the width of the mesa flat-top plateau due to cliff retreat but ignores possible denudation of the me...
Article
Rockfall ages in tectonically active regions provide information regarding frequency and magnitude of earthquakes. In the hyper-arid environment of the Dead Sea fault (DSF), southern Israel, rockfalls are most probably triggered by earthquakes. We dated rockfalls along the western margin of the DSF using terrestrial cosmogenic nuclides (TCN). At ea...
Article
Full-text available
Using cosmogenic isotopes and solute load analysis, we quantify chemical weathering (solutional erosion) and denudation rates over variable time scales in a tectonically stable, moderate-relief, carbonate terrain (Soreq drainage, Judea Hills, Israel), located in a semihumid Mediterranean climate. Long-term (>10(4) yr) denudation rates were calculat...
Article
Full-text available
Calcrete-coated remnants of landslide debris and alluvial deposits are exposed along the presently stable hillslopes of the Soreq drainage, Judea Hills, Israel. These remnants indicate that a transition from landslide-dominated terrain to dissolution-controlled hillslope erosion had occurred. This transition possibly occurred due to the significant...
Article
Quartz in the eastern Mediterranean coastal plain is supplied through an extended transport system, which includes the Nile River, east Mediterranean longshore currents, and inland (Aeolian) sand transport. During this long and complex transport system, quartz grains are dosed with cosmogenic nuclides. While the concentrations of 26Al and 10Be, and...
Article
Colluvial sediments of talus relicts ("talus flatirons") around mesas preserve a record that sheds light on slope-forming processes at temporal scales > 10 3 yr. The sedimentology and soil stratigraphy of two groups of talus flatirons in the northeastern hyperarid Negev desert reveal four deposition events in the younger talus and at least two in t...
Article
The evolution of Terrestrial Cosmogenic Nuclides (TCN) from an alluvial section in the Atacama Desert is examined. We reconstruct a burial history for the last ∼10 Ma using 40Ar/39Ar dating of volcanic ash layers interbedded with alluvial sediments; this independent dating allows us to distinguish between the effects of erosion, post-burial subsurf...
Article
The current detailed chronostratigraphic framework of the last 1 Ma of an eastern Mediterranean sequence (Haifa Bay, Israel) aims to examine the relative roles of sea-level changes, climate and tectonics. Seven continuous marine cores, up to ∼120 m long, were recovered from shallow water depths. The cores were dated by optically stimulated luminesc...
Article
Accession Number: 80170904; Quade, Jay 1; Reiners, Peter 1; Placzek, Christa 2; Matmon, Ari 3; Pepper, Martin 1; Ojha, Lujendra 4; Murray, Kendra 1; Affiliations: 1: Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA; 2: School of Earth and Environmental Sciences, James Cook University, Townsville, QLD 4811, Australia; 3:...
Article
Quartz sand in the eastern Mediterranean coastal plain is supplied through an extended transport system, which includes the Nile River, east Mediterranean longshore currents, and inland eolian transport. While the concentrations of cosmogenic nuclides (26Al and 10Be), and their ratio, in modern sand deposited along the coast of the eastern Mediterr...