The DOI matches its Crossref record.
The End of Empire: New Radiocarbon Dates from the Ayacucho Valley, Peru, and their Implications for the Collapse of the Wari State
Abstract
This paper presents a suite of new accelerator mass spectrometry (AMS) radiocarbon measurements from the Ayacucho Valley of Peru and discusses their implications for the timing and nature of the collapse of the Wari Empire. Analysis of these and previously published dates from the region indicate that there is little evidence for state political authority in Ayacucho prior to the end of the 7th century. Dated human remains from the polity's eponymous capital indicate that the authority of the state's rulers persisted at least as late as the mid-11th century. Dates from rural sites in the Ayacucho Valley suggest continuity of occupation and folk material culture following Wari's disintegration. Finally, AMS measurements of bone from 2 large extramural ossuaries represent the first absolute dates associated with Chanca ceramics and suggest that this archaeological/ethnohistoric culture appeared in the valley at about AD 1300.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“The Inca Empire is mostly located in the Southern Hemisphere, so SHCal might seem appropriate, but atmospheric mixing near the equator can extend as far south as Lake Titicaca, where IntCal is a better choice (see Finucane et al. 2007:581;Marsh 2012Marsh : 205-6, 2015: 15-6): 15-6).”
From Dating the expansion of the inca empire: bayesian models from Ecuador and Argentina (2017) · cites this paper as Finucane et al. 2007
Experimental — accuracy not yet measuredThe cited source says what the claim attributes to it.
In the citing paper
“As Finucane et al. (2007) argue for the Ayacucho region of Peru, due to the southward shift of the ITCZ in the primary growing season, the austral summer, much of the CO 2 absorbed by plants should represent the Northern rather than the Southern Hemisphere.”
From Reconceiving the chronology of inca imperial expansion (2012) · cites this paper as Finucane et al. (2007)
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
No references could be resolved yet.
Research works printed but not linked: 32
- Bragayrac, 1991, Huari Administrative Structure: Prehistoric Monumental Architecture and State Government (Dumbarton Oaks Pre-Columbian Conference Proceedings)., 71
- Williams, 2001, Huari y Tiwanaku: Modelos vs. Evidencias., 5, 69
- Valdez, 2003a, Las ruinas de Chillukupampa, Warpa, 1
- Perez, 2000, Huari y Tiwanaku: Modelos vs. Evidencias., 4
- 10.1179/naw.1964.2.1.001 · DOI
- 10.1017/S0033822200039473 · DOI
- 10.1017/S0033822200038212 · DOI
- Anders, 1991, Huari Administrative Structure: Prehistoric Monumental Architecture and State Government (Dumbarton Oaks Pre-Columbian Conference Proceedings).
- 10.1017/S0033822200032999 · DOI · Paper page
- 10.1017/S0033822200030903 · DOI · Paper page
- Isbell, 1977, The Rural Foundation for Urbanism: Economic and Stylistic Interaction Between Rural and Urban Communities in Eighth-Century Peru., 188
- Lumbreras, 1974, Las Fundaciones de Huamanga., 115
- Valdez, 2003b, Pueblos del periodo intermedio tardió, Warpa, 3, 3
- 10.2307/279393 · DOI
- 10.2307/4141562 · DOI
- McEwan, 1991, Huari Administrative Structures: Prehistoric Monumental Architecture and State Government (Dumbarton Oaks Pre-Columbian Conference Proceedings)., 93
- Glowacki, 2005, Pikillacta: The Wari Empire in Cuzco.
- 10.1073/pnas.0508673102 · DOI
- Ketterman, 2001, New dates on the Huari Empire: chronometric dating of the prehistoric occupation of Conchopata, Ayacucho, Peru [unpublished Master's thesis]
- Isbell, 2000, Huari y Tiwanaku: Modelos vs. Evidencias., 4, 9
- Isbell, 1991, Huari Administrative Structures: Prehistoric Monumental Architecture and State Government. (Dumbarton Oaks Pre-Columbian Conference Proceedings)., 19
- 10.2307/30042486 · DOI · Paper page
- 10.1038/317806a0 · DOI
- Vivanco, 2003, Qasapampa: un poblado de agriculturas Wari en la frontera de los valles de Huamanga y Huanta, Investigaciones en Ciencias Sociales, 1, 89
- Anders, 1986, Dual organization and calendars inferred from the planned site of Azangaro-Wari Administrative strategies [PhD dissertation]
- 10.1016/j.jas.2006.03.012 · DOI
- Schreiber, 1992, Wari Imperialism in Middle Horizon Peru., 332, 10.3998/mpub.11396257 · DOI · Paper page
- 10.1017/S0033822200033014 · DOI · Paper page
- 10.3406/jsa.1983.2226 · DOI
- MacNeish, 1981, Prehistory of the Ayacucho Basin, Peru., II, 279
- Isbell, 2001, Huari y Tiwanaku: Modelos vs. Evidencias., 5
- 10.1146/annurev.anthro.30.1.41 · DOI
Cited by
Sorted by citations
Dating the expansion of the inca empire: bayesian models from Ecuador and Argentina
Marsh, E. J., Kidd, R., Ogburn, D., & Durán, V. (2017) · Radiocarbon · doi:10.1017/rdc.2016.118 · Cited by 144
Reconceiving the chronology of inca imperial expansion
Ogburn, D. E. (2012) · Radiocarbon · doi:10.2458/azu_js_rc.v54i2.16014 · Cited by 118
Marsh, E. J., Bruno, M. C., Fritz, S. C., Baker, P., Capriles, J. M., & Hastorf, C. A. (2018) · Radiocarbon · doi:10.1017/rdc.2018.16 · Cited by 109
Metadata
- Authors
- Finucane, B. C., Valdez, J. E., Calderon, I. P., Pomacanchari, C. V., Valdez, L. M., & O'Connell, T.
- Venue
- Radiocarbon
- Publisher
- Cambridge University Press (CUP)
- Published
- 2007
- Volume
- 49
- Issue
- 2
- Pages
- 579-592
- ISSN
- 0033-8222
- 1945-5755
- Cited by
- 27
- References
- 0
- Language
- en
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: The End of Empire: New Radiocarbon Dates from the Ayacucho Valley, Peru, and their Implications for the Collapse of the Wari State. https://app.cochat.ai/papers/10.1017/s003382220004248x
- The paper
- Finucane, B. C., Valdez, J. E., Calderon, I. P., Pomacanchari, C. V., Valdez, L. M., & O'Connell, T. (2007). The End of Empire: New Radiocarbon Dates from the Ayacucho Valley, Peru, and their Implications for the Collapse of the Wari State. Radiocarbon. https://doi.org/10.1017/s003382220004248x
