Scale and diversity of the physical technosphere: A geological perspective

Date

2017

Authors

Zalasiewicz, J
Williams, Mark
Waters, Colin
Barnosky, Anthony D.
Palmesino, John
Rönnskog, Ann-Sofi
Edgeworth, Matt
Neal, Cath
Cearreta, Alejandro
Ellis, Erle C.

Journal Title

Journal ISSN

Volume Title

Publisher

Sage Journals

Abstract

We assess the scale and extent of the physical technosphere, defined here as the summed material output of the contemporary human enterprise. It includes active urban, agricultural and marine components, used to sustain energy and material flow for current human life, and a growing residue layer, currently only in small part recycled back into the active component. Preliminary estimates suggest a technosphere mass of approximately 30 trillion tonnes (Tt), which helps support a human biomass that, despite recent growth, is ~5 orders of magnitude smaller. The physical technosphere includes a large, rapidly growing diversity of complex objects that are potential trace fossils or ‘technofossils’. If assessed on palaeontological criteria, technofossil diversity already exceeds known estimates of biological diversity as measured by richness, far exceeds recognized fossil diversity, and may exceed total biological diversity through Earth’s history. The rapid transformation of much of Earth’s surface mass into the technosphere and its myriad components underscores the novelty of the current planetary transformation.

Description

Keywords

Anthropocene, anthroposphere, artefacts, stratigraphy, technology, technosphere

Citation

Source

The Anthropocene Review

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1177/2053019616677743

Restricted until

2099-12-31