Induan

Also known as Induan Stage, Induan Age

The Induan is the first age of the Early Triassic epoch in the geologic timescale, or the lowest stage of the Lower Triassic series in chronostratigraphy. It spans the time between 251.902 Ma and 249.9 Ma (million years ago). The Induan is sometimes divided into the Griesbachian and the Dienerian subages or substages. The Induan is preceded by the Changhsingian (latest Permian) and is followed by the Olenekian.

Key facts

Geologic timespan.color: Induan
Geologic timespan.time_start: 251.902
Geologic timespan.time_start_uncertainty: 0.024
Geologic timespan.time_end: 249.9
Geologic timespan.image_outcrop: Lower Limestone and Shale Member, Mikin Formation, Mud (Spiti).jpg
Geologic timespan.caption_outcrop: Induan aged rock layers of the Mikin Formation (Lahaul and Spiti district, India)
Geologic timespan.timeline: Triassic
Geologic timespan.name_formality: Formal
Geologic timespan.celestial_body: earth
Geologic timespan.usage: Global (ICS)
Geologic timespan.timescales_used: ICS Time Scale
Geologic timespan.chrono_unit: Age
Geologic timespan.strat_unit: Stage
Geologic timespan.timespan_formality: Formal
Geologic timespan.lower_boundary_def: FAD of the Conodont Hindeodus parvus
Geologic timespan.lower_gssp_location: Meishan, Zhejiang, China
Geologic timespan.lower_gssp_accept_date: 2001
Geologic timespan.upper_boundary_def: Not formally defined