Adjective
glauconitic (comparative more glauconitic, superlative most glauconitic)
Relating to, or containing, glauconite.
A sandy stratum, glauconitic marl (tortia), is in between the chalk marl and gault clay. Source: Internet
The English terminal had to be located in the Castle Hill landslip, which consists of displaced and tipping blocks of lower chalk, glauconitic marl and gault debris. Source: Internet