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A preliminary investigation of the timing of the local last glacial maximum and deglaciation on HualcaHualca volcano - Patapampa Altiplano (arid Central Andes, Peru)

Publicated to:Quaternary International. 449 149-160 - 2017-08-25 449(), DOI: 10.1016/j.quaint.2017.07.036

Authors: Alcalá-Reygosa J; Palacios D; Vázquez-Selem L

Affiliations

Universidad Complutense de Madrid - Author
Universidad Nacional Autónoma de México - Author

Abstract

We studied the timing and area of the late Pleistocene maximum glacier extent, the readvance or stillstand phases and the deglaciation processes in the HualcaHualca volcano and Patapampa Altiplano, located in the southern arid Peruvian Andes. We used geomorphological mapping and 9 36Cl cosmogenic surface exposure dating of moraine boulders as well as polished and striated bedrock surfaces. The cosmogenic exposure ages indicates that the local Last Glacial Maximum occurred at 17–16 ka on the HualcaHualca volcano. Moreover, the Patapampa Altiplano ice cap had already disappeared by ∼12 ka while glaciers on the HualcaHualca also experienced a marked retreat at that time. However, the low number of samples in the study area and the different chronologies derived from the available production rates do not allow us to provide a detailed glacial reconstruction. We recommend a more intensive dating campaign and the development of a local production rate for 36Cl in the Central Andes.

Keywords

36 cl surface exposure datingCentral andesLast glacial maximumLate glacialTauca and coipasa paleolake cycles

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Quaternary International due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2017, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Earth-Surface Processes.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 1.21, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-12, the following number of citations:

  • WoS: 6
  • Scopus: 8
  • OpenCitations: 8

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-12:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 22 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    Leadership analysis of institutional authors

    This work has been carried out with international collaboration, specifically with researchers from: Mexico.

    There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (ALCALA REYGOSA, JESUS) .