WEATHERING

Volumen 13. Number 1. Year 2015.

2019-11-06T23:04:52+02:00October 26th, 2019|Volumen 13. Number 1. Year 2015.|

Volumen 13. Number 1. Year 2015.

Evaluating the Role of Skill Level in Fish Butchery.

Lauren M. Willis, Andrew R. Boehm.

Keywords: EXPERIMENTAL ARCHAEOLOGY, CUT MARKS, CHINOOK SALMON, SKILL, KNOWLEDGE, KNOW-HOW, BUTCHERY

[+info] VOLUME 13. NUMBERS 1. 2015 (1 issue)

Recent butchery experiments have acknowledged the potential influence of experience level on experimental results. This paper evaluates the effect of skill level on the number and distribution of cut marks produced on fish bone during butchery. Participants of varying skill levels (novice, intermediate, and professional) butchered a total of 30 salmon. Professional butchers differed from intermediate- and novice-level butchers in the number of cut marks produced and the amount of time required to butcher the fish. Specifically, the professional butchers produced nearly 50% fewer cut marks than novices and intermediate-level butchers; the intermediate- and novice-level butchers were statistically indistinguishable. The distribution of the cut marks varied both within and between the skill levels. These results have implications for experimental methodology and for future efforts to identify butchery skill within the archaeological record.

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Weathering and Dispersal of a Cattle (Bos taurus) Carcass in the Desert of Eastern Jordan over a Six-Year Interval.

James T. Pokines, Christopher J.H. Ames.

Keywords: WEATHERING, BOS TAURUS, DISPERSAL, DESERT, TAPHONOMY, JORDAN

[+info] VOLUME 13. NUMBERS 1. 2015 (2 issue)

A recently dead carcass of domesticated cattle (Bos taurus) was examined for patterns of subaerial weathering and dispersal over the course of six years in Wadi Enoqiyya, north of Azraq in the eastern desert of Jordan. The progress of taphonomic changes was plotted at one- or two-year intervals. Weathering stage 1 was reached rapidly by multiple exposed elements, and by the six-year mark, several elements had reached weathering stage 3 in the system of Behrensmeyer (1978). Minor scavenger modification was detected. Seasonal alluvial transport in the nearby wadi and trampling from goat/sheep herds were found to be significant sources of dispersal, along with carnivore scavenging. Some elements were transported up to 121 m by year six, with a cumulative distance of dispersed elements reaching 583 m.

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Cannibalism in the Neanderthal World: An Exhaustive Revision.

Marta Yustos, José Yravedra Sainz de los Terreros.

Keywords: NEANDERTHALS, CANNIBALISM, CUT MARKS, DEFLESHING, TAPHONOMY

[+info] VOLUME 13. NUMBERS 1. 2015 (3 issue)

Cannibalism is a controversial subject that has always created great expectation. Different evidences found show it was a recurrent practice amongst the different hominine species from the Lower Pleistocene to historic times. However, understanding the reasons behind this behavior in such chronologies is a complicated matter. Several Neanderthal sites have uncovered new data on anthropogenic alterations on human remains, along with a great diversity of interpretations. Some authors highlight the possibility of a ritual or symbolic meaning whereas others believe this was due to dietary necessities since studied cut marks resemble those found on faunal remains. The aim of this study is to carry out an exhaustive Neanderthal cannibalism bibliographic revision, with especial focus on taphonomical evidences such as cut mark frequencies and cut mark anatomical distribution. The main objective of this study is therefore to ponder on Neanderthal cannibalism and propose new insights on this behavior.

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The Taphonomist´s Corner: Understanding exceptional preservation in microbial mats.

Miguel Iniesto, M. Carmen Guerrero, Ana I. López-Archilla.

Keywords

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Volumen 15. Number 1-3. Year 2017.

2019-11-06T23:06:44+02:00October 26th, 2019|Volumen 15. Number 1-3. Year 2017.|

Volumen 15. Number 1-3. Year 2017.

Introduction to the special issue Actualistic Taphonomy in Argentina: Current Status of the Research and Future Perspectives.

Daniela Alunni, María Clara Álvarez.

Keywords: EXPERIMENTAL TAPHONOMY, FORMATION PROCESSES, BIOTURBATION, BIOMANTLE, SALADO RIVER DEPRESSION

[+info] VOLUME 15. NUMBERS 1. 2017 (1 issue)

The Salado River Depression was inhabited during the Late Holocene (2400-400 14C YBP) by pottery-maker societies with a hunting-gathering-fishing lifeway. The archaeological remains are deposited in the A horizon of the modern soil, which constitutes a "biomantle" as pedogenetic formation processes predominate. These include an intense biological activity produced by the action of roots and edaphic fauna that promote displacements of objects and their sinking to different depths. Hence the archaeological sites of this microregion are shallow. In order to broaden the knowledge about the action of earthworms in these sites, an actualistic taphonomy experiment was designed. The goal was to observe the activity of these invertebrates and to evaluate their possible incidence as a disturbing agent on small bones deposited on a soil. The aim of this paper is to introduce the methodological design of this experimentation and present the preliminary results. For this purpose, two containers with sediment containing humus and earthworms were placed in the open air. Some selected bones of Dasypus hybridus and Gallus gallus were deposited in each container. The activity of earthworms was observed along one year with a weekly record and was detected as deep as 16 cm. Other features associated -such as burrows- were documented, especially in autumn and winter. No modifications were identified on bone cortical surfaces, though vertical movement of some elements through the sediment is highlighted.

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Actualistic Study of a Dense Concentration of Bone Remains in the Central Plateau of Santa Cruz Province (Argentina).

Laura Marchionni, Eloisa García Añino, Laura Miotti.

Keywords: ACTUALISTIC TAPHONOMY, BONE ACCUMULATIONS, NATURAL DEATH, OVIS ARIES, ZOOARCHEOLOGY, SOUTHERN PATAGONIA

[+info] VOLUME 15. NUMBERS 1. 2017 (2 issue)

This work analyzes a modern bone concentration at Cueva 7, in Los Toldos archaeological locality, as part of the taphonomic studies that we have carried out in the northeast of the Central Plateau of Santa Cruz province (Argentina). The goal of this work is to identify the actualistic taphonomic patterns that can contribute to a better interpretation of the archaeological sites in caves or rock shelters where piles or dense bone concentrations were registered in the study region. From the identification of different taxonomic, anatomic, mortality, and bone modification patterns in this highly-dense accumulation, we evaluate the possible causes of its formation, and produce actualistic information which may be of use to learn about the different processes that accumulate and scatter zooarchaeological remains in the cave environments of the study area. The results show a monospecific assemblage integrated by no less than 43 Ovis aries individuals whose death was natural. The accumulation is characterized by a natural disarticulation pattern, which appears to be more accelerated in appendicular elements, a homogenous weathering profile with minor differences that may be associated with the microenvironments recorded inside the cave, and the very low incidence of natural agents, where trampling was the highest. This work thus provides valuable actualistic information that can be used as a parameter in the determination of possible natural contamination in archaeological contexts.

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Naturalistic Observations on the Disarticulation of False Killer Whales (Pseudorca crassidens) Carcasses: Fifteen Years After.

Florencia Borella, Luis A. Borrero.

Keywords: WHALES, ORDER OF DISARTICULATION, NATURAL FORMATION PROCESSES, ZOOARCHAEOLOGICAL ASSEMBLAGES, PSEUDORCA CRASSIDENS, TIERRA DEL FUEGO

[+info] VOLUME 15. NUMBERS 1. 2017 (3 issue)

A mass stranding of 181 false killer whales (Pseudorca crassidens) occurred in March 1989 on both sides of the Strait of Magellan. Fifteen years later, taphonomic observations were made on this concentration and the results are presented in this article. In the coast of Bahía Lomas, Tierra del Fuego (Chile), frequencies of articulated elements were quantified following Hill (1979a, 1979b), and a ranking of natural bone disarticulation for whales was proposed. This ranking was made on the basis of skeletons from one species but, given the morphological similarities of Cetaceae, it is possible to suggest that it applies to similarly-sized Odontoceti. Together with other useful taphonomic criteria (weathering and bone preservation), these results can be used to disentangle the origin of whale bone accumulations at coastal archaeological sites in different parts of the world and to estimate the time of burial of zooarchaeological assemblages. In this way, the role of whales in human diet can be discussed in greater detail.

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Natural Accumulation and Distribution of Guanaco Bones in the Southernmost Tip of Tierra del Fuego (Argentina): Taphonomic Analysis and Archaeological Implications.

Daniela V. Alunni, María A. Gutiérrez, Atilio F. Zangrando.

Keywords: ACTUALISTIC TAPHONOMY, MODERN BONE ACCUMULATION AND PRESERVATION, GUANACO (LAMA GUANICOE), SITE FORMATION PROCESS, COASTAL ENVIRONMENTS, MOAT BAY

[+info] VOLUME 15. NUMBERS 1. 2017 (4 issue)

In this study we evaluate modern accumulation, dispersion and preservation patterns of guanaco bones (Lama guanicoe) and discuss their implications for the zooarchaeological record of coastal Tierra del Fuego in southern South America. We surveyed four environmental units: the supra-tidal zone, forests, grasslands, and peat bogs. The guanaco assemblages consist of both disarticulated and articulated bones, most represented by limbs and heads (only two nearly complete carcasses were recorded). Natural processes such as marine abrasion largely affected the preservation of specimens, while weathering is a conspicuous effect observed on bones from the forest. Age and sex profiles, as well as variability in preservation, reflect attritional deaths in different time periods. The guanaco seems to be found regularly along the southeast coasts, being an available resource for coastal and marine hunter-gatherers with relatively narrow foraging ranges. The presence of guanaco is higher during autumn and winter. Bone remains are subject to vertical migration in peat bogs, grasslands and other soft substrates, allowing time-averaging of faunal assemblage formations.

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Taphonomic Effects of a Grassland Fire on a Modern Faunal Sample and its Implications for the Archaeological Record.

María C. Álvarez, Agustina Massigoge, Nahuel Scheifler, Mariela E. Gonzalez, Cristian Kaufmann, María A. Gutiérrez, Daniel J. Rafuse.

Keywords: NATURALISTIC TAPHONOMY, GRASSLAND FIRE, VERTEBRATE BONES, THERMAL ALTERATION

[+info] VOLUME 15. NUMBERS 1. 2017 (5 issue)

The main objective of this paper is to characterize the pattern of thermal alteration in a sample of modern bones collected after a natural grassland fire in the Pampas region (Argentina). A total of 917 bone remains were recovered, including a variety of different body size taxa. Results suggest that natural grassland fires affect bone remains in a more severe way than previously documented. In general, a high proportion of bones with thermal alteration (70%) was recorded for the different body size categories, with calcined bones dominating the sample. Some differences in relation to the size classes were found; specifically, a higher extension of burning was recorded for the smaller-sized taxa. For the small animals, the homogeneous distribution of the burning damage in long bones and mandibles could help to differentiate a natural grassland fire from cooking, in which the burning pattern would be more heterogeneous.

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The Role of the Accipitriformes Geranoaetus melanoleucus and Geranoaetus polyosoma as Small Mammal Bones Accumulators in Modern and Archaeological Sites from Central Western Argentina.

José Manuel López, Fernando J. Fernández, Claudia I. Montalvo, Horacio Chiavazza, Luciano, J.M. De Santis.

Keywords: TAPHONOMY, ACTUALISTIC MODEL, ZOOARCHAEOLOGY, MICROMAMMALS, CENTRAL WESTERN ARGENTINA, RAPTORS

[+info] VOLUME 15. NUMBERS 1. 2017 (6 issue)

Results of the taphonomic analysis of small mammal bone accumulations generated by the accipitriforms Geranoaetus melanoleucus and Geranoaetus polyosoma in several areas from Central Western Argentina (Mendoza Province) are presented here. In order to identify the role that these predators had in the formation of zooarchaeological assemblages, the anatomical representation, bone breakage patterns, and degrees of digestive corrosion were evaluated. According to these taphonomic variables, both G. melanoleucus and G. polyosoma may be placed in the Category 4 (heavy) of modification of prey bones. The results presented here were used as an analytical model for the interpretation of the micromammal fossil record from three archaeological sites in Mendoza Province. This comparison suggests that the skeletal remains recovered from one archaeological site are very close to those produced by G. polyosoma. However, accumulations from the other sites had intermediate values between those of G. polyosoma and G. melanoleucus.

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First Steps into the Microscopic Metrical Characterization of Bone Weathering in a Sample of Modern Guanaco (Lama guanicoe) from Southern Patagonia, Argentina: Implications for Patterns of Intraosseous Differential Preservation.

Natalia Morales, Gustavo Barrientos, Juan Bautista Belardi.

Keywords: PATAGONIA, LAMA GUANICOE, LONG BONES, DIFFERENTIAL INTRAOSSEOUS PRESERVATION, WEATHERING

[+info] VOLUME 15. NUMBERS 1. 2017 (7 issue)

In many southern Patagonia archaeological bone assemblages deposited in open-air settings, a remarkable difference in preservation between shafts and epiphyses of guanaco (Lama guanicoe) long bones, leading to an overrepresentation of the latter, has been found. It has been suggested that, in dynamic sedimentary deposits like those investigated in this region, the observed pattern is mainly related to subaerial weathering or to a combination of weathering and abrasion preferentially affecting long bone shafts, processes that may have little relationship with bone mineral density (BMD). In order to investigate in more detail the relationship between weathering and bone mineral density (BMD) and cortical thickness in guanaco long bones, a microscopic (low magnification) metrical analysis of partial cross-sections from a sample of modern radii-ulnae with a various degrees of weathering was performed. Overall, the obtained results suggest that subaerial weathering can suffice to explain the observed archaeological pattern of differential intraosseous preservation, although this inference should be further supported with data from a larger sample including other long bones as well as a more complete record of the weathering sequence.

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Four Decades of Actualistic Carnivore Taphonomy in the Southern Neotropics: A State of the Art.

Mariana Mondini.

Keywords: CARNIVORES, TAPHONOMY, ACTUALISTIC STUDIES, NEOTROPICS, SOUTHERN SOUTH AMERICA

[+info] VOLUME 15. NUMBERS 1. 2017 (8 issue)

Based on a bibliographic survey, this paper reviews the state of the art of actualistic taphonomic information of different autochthonous mammalian carnivores in the southern Neotropics. The characteristics of this corpus of data and its implications for the fossil record are analysed. The paper focuses on identifying and discussing those areas of research that are robustly reflected by existing studies. Synthetic discussion of the results of research on the most studied carnivore taxa, types of bone assemblages, actualistic approaches, and ecological zones in the region are presented. While the field of actualistic taphonomic research is well-developed in the region, there are several gaps that require more attention for the future investigation.

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The Taphonomist´s Corner: Regional Taphonomy of cetaceans bones in the “Uttermost part of the earth”.

Florencia Borella.

Keywords

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